49678437888 has 240 divisors, whose sum is σ = 149425436160. Its totient is φ = 16477157376.

The previous prime is 49678437883. The next prime is 49678437889. The reversal of 49678437888 is 88873487694.

49678437888 is a `hidden beast` number, since 49 + 6 + 78 + 437 + 8 + 88 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49678437883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28241553 + ... + 28243311.

It is an arithmetic number, because the mean of its divisors is an integer number (622605984).

Almost surely, 2^49678437888 is an apocalyptic number.

49678437888 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 49678437888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74712718080).

49678437888 is an abundant number, since it is smaller than the sum of its proper divisors (99746998272).

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

49678437888 is an equidigital number, since it uses as much as digits as its factorization.

49678437888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 1991 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 49678437888 in words is "forty-nine billion, six hundred seventy-eight million, four hundred thirty-seven thousand, eight hundred eighty-eight".