49639770432 has 560 divisors, whose sum is σ = 180869344128. Its totient is φ = 13138329600.

The previous prime is 49639770431. The next prime is 49639770491. The reversal of 49639770432 is 23407793694.

It is a super-2 number, since 2×49639770432² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49639770431) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 41331432 + ... + 41332632.

Almost surely, 2^49639770432 is an apocalyptic number.

49639770432 is a gapful number since it is divisible by the number (42) 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 49639770432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90434672064).

49639770432 is an abundant number, since it is smaller than the sum of its proper divisors (131229573696).

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

49639770432 is a wasteful number, since it uses less digits than its factorization.

49639770432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 49639770432 in words is "forty-nine billion, six hundred thirty-nine million, seven hundred seventy thousand, four hundred thirty-two".