51656565010010 has 8 divisors (see below), whose sum is σ = 92981817018036. Its totient is φ = 20662626004000.

The previous prime is 51656565009991. The next prime is 51656565010027. The reversal of 51656565010010 is 1001056565615.

It can be written as a sum of positive squares in 2 ways, for example, as 46878629159209 + 4777935850801 = 6846797^2 + 2185849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51656565010010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2582828250491 + ... + 2582828250510.

Almost surely, 2^{51656565010010} is an apocalyptic number.

51656565010010 is a deficient number, since it is larger than the sum of its proper divisors (41325252008026).

51656565010010 is a wasteful number, since it uses less digits than its factorization.

51656565010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165656501008.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 51656565010010 in words is "fifty-one trillion, six hundred fifty-six billion, five hundred sixty-five million, ten thousand, ten".