49507685656 has 128 divisors (see below), whose sum is σ = 114810877440. Its totient is φ = 19692288000.

The previous prime is 49507685621. The next prime is 49507685671. The reversal of 49507685656 is 65658670594.

It is a junction number, because it is equal to n+sod(n) for n = 49507685594 and 49507685603.

It is a congruent number.

It is an unprimeable number.

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, 2964931 + ... + 2981581.

It is an arithmetic number, because the mean of its divisors is an integer number (896959980).

Almost surely, 2^49507685656 is an apocalyptic number.

49507685656 is a gapful number since it is divisible by the number (46) 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 49507685656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57405438720).

49507685656 is an abundant number, since it is smaller than the sum of its proper divisors (65303191784).

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

49507685656 is a wasteful number, since it uses less digits than its factorization.

49507685656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16817 (or 16813 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 61.

The spelling of 49507685656 in words is "forty-nine billion, five hundred seven million, six hundred eighty-five thousand, six hundred fifty-six".