51234210320265 has 120 divisors (see below), whose sum is σ = 106843309163712. Its totient is φ = 23419901977920.

The previous prime is 51234210320257. The next prime is 51234210320281. The reversal of 51234210320265 is 56202301243215.

51234210320265 is a `hidden beast` number, since 5 + 1 + 2 + 342 + 103 + 202 + 6 + 5 = 666.

It is not a de Polignac number, because 51234210320265 - 2³ = 51234210320257 is a prime.

It is a super-2 number, since 2×51234210320265² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 361326412 + ... + 361468178.

Almost surely, 2^{51234210320265} is an apocalyptic number.

It is an amenable number.

51234210320265 is an abundant number, since it is smaller than the sum of its proper divisors (55609098843447).

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

51234210320265 is a wasteful number, since it uses less digits than its factorization.

51234210320265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160009 (or 159993 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 51234210320265 in words is "fifty-one trillion, two hundred thirty-four billion, two hundred ten million, three hundred twenty thousand, two hundred sixty-five".