51233223056465 has 16 divisors (see below), whose sum is σ = 62563111902480. Its totient is φ = 40266036645120.

The previous prime is 51233223056441. The next prime is 51233223056501. The reversal of 51233223056465 is 56465032233215.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14976350465041 + 36256872591424 = 3869929^2 + 6021368^2 .

It is not a de Polignac number, because 51233223056465 - 2⁶ = 51233223056401 is a prime.

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, 101060654 + ... + 101566343.

It is an arithmetic number, because the mean of its divisors is an integer number (3910194493905).

Almost surely, 2^{51233223056465} is an apocalyptic number.

It is an amenable number.

51233223056465 is a deficient number, since it is larger than the sum of its proper divisors (11329888846015).

51233223056465 is a wasteful number, since it uses less digits than its factorization.

51233223056465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202627892.

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 51233223056465 in words is "fifty-one trillion, two hundred thirty-three billion, two hundred twenty-three million, fifty-six thousand, four hundred sixty-five".