49989538368 has 224 divisors, whose sum is σ = 183223326720. Its totient is φ = 12984261120.

The previous prime is 49989538363. The next prime is 49989538373. The reversal of 49989538368 is 86383598994.

49989538368 is a `hidden beast` number, since 4 + 9 + 9 + 89 + 538 + 3 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (49989538363) and next prime (49989538373).

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 49989538296 and 49989538305.

It is not an unprimeable number, because it can be changed into a prime (49989538363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54796 + ... + 320907.

It is an arithmetic number, because the mean of its divisors is an integer number (817961280).

Almost surely, 2^49989538368 is an apocalyptic number.

49989538368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49989538368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91611663360).

49989538368 is an abundant number, since it is smaller than the sum of its proper divisors (133233788352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49989538368 is a wasteful number, since it uses less digits than its factorization.

49989538368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375742 (or 375726 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 72.

The spelling of 49989538368 in words is "forty-nine billion, nine hundred eighty-nine million, five hundred thirty-eight thousand, three hundred sixty-eight".