51649226956 has 12 divisors (see below), whose sum is σ = 90394750768. Its totient is φ = 25822155312.

The previous prime is 51649226953. The next prime is 51649226987. The reversal of 51649226956 is 65962294615.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51649226897 and 51649226906.

It is not an unprimeable number, because it can be changed into a prime (51649226953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566856 + ... + 651631.

Almost surely, 2^51649226956 is an apocalyptic number.

It is an amenable number.

51649226956 is a deficient number, since it is larger than the sum of its proper divisors (38745523812).

51649226956 is a wasteful number, since it uses less digits than its factorization.

51649226956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229088 (or 1229086 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 55.

The spelling of 51649226956 in words is "fifty-one billion, six hundred forty-nine million, two hundred twenty-six thousand, nine hundred fifty-six".