51460477643 has 4 divisors (see below), whose sum is σ = 51466509888. Its totient is φ = 51454445400.

The previous prime is 51460477619. The next prime is 51460477661. The reversal of 51460477643 is 34677406415.

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 51460477643 - 2²² = 51456283339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51460477693) 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, 3003308 + ... + 3020393.

It is an arithmetic number, because the mean of its divisors is an integer number (12866627472).

Almost surely, 2^51460477643 is an apocalyptic number.

51460477643 is a deficient number, since it is larger than the sum of its proper divisors (6032245).

51460477643 is an equidigital number, since it uses as much as digits as its factorization.

51460477643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032244.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 51460477643 in words is "fifty-one billion, four hundred sixty million, four hundred seventy-seven thousand, six hundred forty-three".