51477121028855 has 32 divisors (see below), whose sum is σ = 62238743193600. Its totient is φ = 40871973288960.

The previous prime is 51477121028821. The next prime is 51477121028867. The reversal of 51477121028855 is 55882012177415.

It is not a de Polignac number, because 51477121028855 - 2¹⁰ = 51477121027831 is a prime.

It is a super-2 number, since 2×51477121028855² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51477121028855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3631023527 + ... + 3631037703.

It is an arithmetic number, because the mean of its divisors is an integer number (1944960724800).

Almost surely, 2^{51477121028855} is an apocalyptic number.

51477121028855 is a deficient number, since it is larger than the sum of its proper divisors (10761622164745).

51477121028855 is a wasteful number, since it uses less digits than its factorization.

51477121028855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23279.

The product of its (nonzero) digits is 6272000, while the sum is 56.

The spelling of 51477121028855 in words is "fifty-one trillion, four hundred seventy-seven billion, one hundred twenty-one million, twenty-eight thousand, eight hundred fifty-five".