51630365304413 has 4 divisors (see below), whose sum is σ = 59006131776480. Its totient is φ = 44254598832348.

The previous prime is 51630365304409. The next prime is 51630365304487. The reversal of 51630365304413 is 31440356303615.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51630365304413 - 2² = 51630365304409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51630365304403) 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, 3687883236023 + ... + 3687883236036.

It is an arithmetic number, because the mean of its divisors is an integer number (14751532944120).

Almost surely, 2^{51630365304413} is an apocalyptic number.

It is an amenable number.

51630365304413 is a deficient number, since it is larger than the sum of its proper divisors (7375766472067).

51630365304413 is an equidigital number, since it uses as much as digits as its factorization.

51630365304413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7375766472066.

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

The spelling of 51630365304413 in words is "fifty-one trillion, six hundred thirty billion, three hundred sixty-five million, three hundred four thousand, four hundred thirteen".