51634221032265 has 128 divisors (see below), whose sum is σ = 89703802626048. Its totient is φ = 25262569512960.

The previous prime is 51634221032227. The next prime is 51634221032281. The reversal of 51634221032265 is 56223012243615.

It is not a de Polignac number, because 51634221032265 - 2⁷ = 51634221032137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2916025542 + ... + 2916043248.

It is an arithmetic number, because the mean of its divisors is an integer number (700810958016).

Almost surely, 2^{51634221032265} is an apocalyptic number.

It is an amenable number.

51634221032265 is a deficient number, since it is larger than the sum of its proper divisors (38069581593783).

51634221032265 is a wasteful number, since it uses less digits than its factorization.

51634221032265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18767.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 51634221032265 in words is "fifty-one trillion, six hundred thirty-four billion, two hundred twenty-one million, thirty-two thousand, two hundred sixty-five".