51649622796 has 96 divisors (see below), whose sum is σ = 124073607168. Its totient is φ = 16716992320.

The previous prime is 51649622749. The next prime is 51649622797. The reversal of 51649622796 is 69722694615.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51649622797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27083275 + ... + 27085181.

It is an arithmetic number, because the mean of its divisors is an integer number (1292433408).

Almost surely, 2^51649622796 is an apocalyptic number.

It is an amenable number.

51649622796 is an abundant number, since it is smaller than the sum of its proper divisors (72423984372).

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

51649622796 is a wasteful number, since it uses less digits than its factorization.

51649622796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451 (or 2449 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The spelling of 51649622796 in words is "fifty-one billion, six hundred forty-nine million, six hundred twenty-two thousand, seven hundred ninety-six".