51125604663355 has 4 divisors (see below), whose sum is σ = 61350725596032. Its totient is φ = 40900483730680.

The previous prime is 51125604663307. The next prime is 51125604663377. The reversal of 51125604663355 is 55336640652115.

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

It is not a de Polignac number, because 51125604663355 - 2¹⁵ = 51125604630587 is a prime.

It is a super-2 number, since 2×51125604663355² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

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, 5112560466331 + ... + 5112560466340.

It is an arithmetic number, because the mean of its divisors is an integer number (15337681399008).

Almost surely, 2^{51125604663355} is an apocalyptic number.

51125604663355 is a deficient number, since it is larger than the sum of its proper divisors (10225120932677).

51125604663355 is a wasteful number, since it uses less digits than its factorization.

51125604663355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225120932676.

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 51125604663355 in words is "fifty-one trillion, one hundred twenty-five billion, six hundred four million, six hundred sixty-three thousand, three hundred fifty-five".