49680636251 has 12 divisors (see below), whose sum is σ = 52626609504. Its totient is φ = 46892098800.

The previous prime is 49680636191. The next prime is 49680636259. The reversal of 49680636251 is 15263608694.

49680636251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49680636251 - 2²⁶ = 49613527387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49680636251.

It is not an unprimeable number, because it can be changed into a prime (49680636259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156080 + ... + 351741.

It is an arithmetic number, because the mean of its divisors is an integer number (4385550792).

Almost surely, 2^49680636251 is an apocalyptic number.

49680636251 is a deficient number, since it is larger than the sum of its proper divisors (2945973253).

49680636251 is a wasteful number, since it uses less digits than its factorization.

49680636251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508130 (or 508111 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 49680636251 in words is "forty-nine billion, six hundred eighty million, six hundred thirty-six thousand, two hundred fifty-one".