51665402065362 has 32 divisors (see below), whose sum is σ = 104128814585664. Its totient is φ = 17089307558400.

The previous prime is 51665402065339. The next prime is 51665402065391. The reversal of 51665402065362 is 26356020456615.

It is a super-3 number, since 3×51665402065362³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63169968 + ... + 63982619.

It is an arithmetic number, because the mean of its divisors is an integer number (3254025455802).

Almost surely, 2^{51665402065362} is an apocalyptic number.

51665402065362 is an abundant number, since it is smaller than the sum of its proper divisors (52463412520302).

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

51665402065362 is a wasteful number, since it uses less digits than its factorization.

51665402065362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127153114.

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 51665402065362 in words is "fifty-one trillion, six hundred sixty-five billion, four hundred two million, sixty-five thousand, three hundred sixty-two".