51251214265 has 16 divisors (see below), whose sum is σ = 62521802496. Its totient is φ = 40326120000.

The previous prime is 51251214239. The next prime is 51251214281. The reversal of 51251214265 is 56241215215.

It is not a de Polignac number, because 51251214265 - 2²⁹ = 50714343353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51251214265.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259797 + ... + 412306.

It is an arithmetic number, because the mean of its divisors is an integer number (3907612656).

Almost surely, 2^51251214265 is an apocalyptic number.

It is an amenable number.

51251214265 is a deficient number, since it is larger than the sum of its proper divisors (11270588231).

51251214265 is a wasteful number, since it uses less digits than its factorization.

51251214265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672360.

The product of its digits is 24000, while the sum is 34.

The spelling of 51251214265 in words is "fifty-one billion, two hundred fifty-one million, two hundred fourteen thousand, two hundred sixty-five".