51204517701121 has 4 divisors (see below), whose sum is σ = 51683064595632. Its totient is φ = 50725970806612.

The previous prime is 51204517701091. The next prime is 51204517701137. The reversal of 51204517701121 is 12110771540215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51204517701121 - 2⁴³ = 42408424678913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51204517701721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239273447095 + ... + 239273447308.

It is an arithmetic number, because the mean of its divisors is an integer number (12920766148908).

Almost surely, 2^{51204517701121} is an apocalyptic number.

It is an amenable number.

51204517701121 is a deficient number, since it is larger than the sum of its proper divisors (478546894511).

51204517701121 is a wasteful number, since it uses less digits than its factorization.

51204517701121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478546894510.

The product of its (nonzero) digits is 19600, while the sum is 37.

The spelling of 51204517701121 in words is "fifty-one trillion, two hundred four billion, five hundred seventeen million, seven hundred one thousand, one hundred twenty-one".