51880350426565 has 32 divisors (see below), whose sum is σ = 62768765928960. Its totient is φ = 41163295916544.

The previous prime is 51880350426563. The next prime is 51880350426577. The reversal of 51880350426565 is 56562405308815.

It is a cyclic number.

It is not a de Polignac number, because 51880350426565 - 2¹ = 51880350426563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51880350426563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3959418804 + ... + 3959431906.

It is an arithmetic number, because the mean of its divisors is an integer number (1961523935280).

Almost surely, 2^{51880350426565} is an apocalyptic number.

It is an amenable number.

51880350426565 is a deficient number, since it is larger than the sum of its proper divisors (10888415502395).

51880350426565 is a wasteful number, since it uses less digits than its factorization.

51880350426565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141.

The product of its (nonzero) digits is 34560000, while the sum is 58.

The spelling of 51880350426565 in words is "fifty-one trillion, eight hundred eighty billion, three hundred fifty million, four hundred twenty-six thousand, five hundred sixty-five".