51949655576 has 64 divisors (see below), whose sum is σ = 119914428480. Its totient is φ = 20546265600.

The previous prime is 51949655567. The next prime is 51949655579. The reversal of 51949655576 is 67555694915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51949655579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4144070 + ... + 4156586.

It is an arithmetic number, because the mean of its divisors is an integer number (1873662945).

Almost surely, 2^51949655576 is an apocalyptic number.

51949655576 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51949655576 is an abundant number, since it is smaller than the sum of its proper divisors (67964772904).

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

51949655576 is a wasteful number, since it uses less digits than its factorization.

51949655576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18244 (or 18240 counting only the distinct ones).

The product of its digits is 51030000, while the sum is 62.

The spelling of 51949655576 in words is "fifty-one billion, nine hundred forty-nine million, six hundred fifty-five thousand, five hundred seventy-six".