51630365064545 has 4 divisors (see below), whose sum is σ = 61956438077460. Its totient is φ = 41304292051632.

The previous prime is 51630365064517. The next prime is 51630365064559. The reversal of 51630365064545 is 54546056303615.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24039644344576 + 27590720719969 = 4903024^2 + 5252687^2 .

It is a cyclic number.

It is not a de Polignac number, because 51630365064545 - 2¹⁰ = 51630365063521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5163036506450 + ... + 5163036506459.

It is an arithmetic number, because the mean of its divisors is an integer number (15489109519365).

Almost surely, 2^{51630365064545} is an apocalyptic number.

It is an amenable number.

51630365064545 is a deficient number, since it is larger than the sum of its proper divisors (10326073012915).

51630365064545 is a wasteful number, since it uses less digits than its factorization.

51630365064545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326073012914.

The product of its (nonzero) digits is 19440000, while the sum is 53.

The spelling of 51630365064545 in words is "fifty-one trillion, six hundred thirty billion, three hundred sixty-five million, sixty-four thousand, five hundred forty-five".