51265633463 has 4 divisors (see below), whose sum is σ = 55926145608. Its totient is φ = 46605121320.

The previous prime is 51265633421. The next prime is 51265633493. The reversal of 51265633463 is 36433656215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51265633463 - 2²⁴ = 51248856247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51265633493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2330256056 + ... + 2330256077.

It is an arithmetic number, because the mean of its divisors is an integer number (13981536402).

Almost surely, 2^51265633463 is an apocalyptic number.

51265633463 is a deficient number, since it is larger than the sum of its proper divisors (4660512145).

51265633463 is a wasteful number, since it uses less digits than its factorization.

51265633463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660512144.

The product of its digits is 1166400, while the sum is 44.

The spelling of 51265633463 in words is "fifty-one billion, two hundred sixty-five million, six hundred thirty-three thousand, four hundred sixty-three".