51290155271465 has 64 divisors (see below), whose sum is σ = 74020959855360. Its totient is φ = 33689914368000.

The previous prime is 51290155271401. The next prime is 51290155271473. The reversal of 51290155271465 is 56417255109215.

It is a happy number.

It is not a de Polignac number, because 51290155271465 - 2⁶ = 51290155271401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8628335 + ... + 13305204.

It is an arithmetic number, because the mean of its divisors is an integer number (1156577497740).

Almost surely, 2^{51290155271465} is an apocalyptic number.

51290155271465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51290155271465 is a deficient number, since it is larger than the sum of its proper divisors (22730804583895).

51290155271465 is a wasteful number, since it uses less digits than its factorization.

51290155271465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21933674.

The product of its (nonzero) digits is 3780000, while the sum is 53.

The spelling of 51290155271465 in words is "fifty-one trillion, two hundred ninety billion, one hundred fifty-five million, two hundred seventy-one thousand, four hundred sixty-five".