51204301051645 has 32 divisors (see below), whose sum is σ = 73393438406400. Its totient is φ = 33551285999616.

The previous prime is 51204301051613. The next prime is 51204301051649. The reversal of 51204301051645 is 54615010340215.

It is not a de Polignac number, because 51204301051645 - 2⁵ = 51204301051613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51204301051649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259940655 + ... + 260137564.

It is an arithmetic number, because the mean of its divisors is an integer number (2293544950200).

Almost surely, 2^{51204301051645} is an apocalyptic number.

It is an amenable number.

51204301051645 is a deficient number, since it is larger than the sum of its proper divisors (22189137354755).

51204301051645 is a wasteful number, since it uses less digits than its factorization.

51204301051645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520078357.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 51204301051645 in words is "fifty-one trillion, two hundred four billion, three hundred one million, fifty-one thousand, six hundred forty-five".