49377728520 has 256 divisors, whose sum is σ = 167269363200. Its totient is φ = 12954193920.

The previous prime is 49377728509. The next prime is 49377728623. The reversal of 49377728520 is 2582777394.

49377728520 is a `hidden beast` number, since 4 + 93 + 7 + 7 + 7 + 28 + 520 = 666.

It is a Cunningham number, because it is equal to 222211²-1.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59996829 + ... + 59997651.

It is an arithmetic number, because the mean of its divisors is an integer number (653395950).

Almost surely, 2^49377728520 is an apocalyptic number.

49377728520 is a gapful number since it is divisible by the number (40) 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 49377728520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83634681600).

49377728520 is an abundant number, since it is smaller than the sum of its proper divisors (117891634680).

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

49377728520 is a wasteful number, since it uses less digits than its factorization.

49377728520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 49377728520 in words is "forty-nine billion, three hundred seventy-seven million, seven hundred twenty-eight thousand, five hundred twenty".