51205102052451 has 8 divisors (see below), whose sum is σ = 68440397202960. Its totient is φ = 34053270801792.

The previous prime is 51205102052431. The next prime is 51205102052519. The reversal of 51205102052451 is 15425020150215.

51205102052451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51205102052451 - 2²¹ = 51205099955299 is a prime.

It is a super-2 number, since 2×51205102052451² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51205102052431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20865973530 + ... + 20865975983.

It is an arithmetic number, because the mean of its divisors is an integer number (8555049650370).

Almost surely, 2^{51205102052451} is an apocalyptic number.

51205102052451 is a deficient number, since it is larger than the sum of its proper divisors (17235295150509).

51205102052451 is a wasteful number, since it uses less digits than its factorization.

51205102052451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41731949925.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 51205102052451 in words is "fifty-one trillion, two hundred five billion, one hundred two million, fifty-two thousand, four hundred fifty-one".