51204614947599 has 64 divisors (see below), whose sum is σ = 70488416768000. Its totient is φ = 33053471193600.

The previous prime is 51204614947573. The next prime is 51204614947609. The reversal of 51204614947599 is 99574941640215.

It is a Cunningham number, because it is equal to 7155740²-1.

It is not a de Polignac number, because 51204614947599 - 2⁵ = 51204614947567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51204614947399) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1080493197 + ... + 1080540585.

It is an arithmetic number, because the mean of its divisors is an integer number (1101381512000).

Almost surely, 2^{51204614947599} is an apocalyptic number.

51204614947599 is a deficient number, since it is larger than the sum of its proper divisors (19283801820401).

51204614947599 is a wasteful number, since it uses less digits than its factorization.

51204614947599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48008.

The product of its (nonzero) digits is 97977600, while the sum is 66.

The spelling of 51204614947599 in words is "fifty-one trillion, two hundred four billion, six hundred fourteen million, nine hundred forty-seven thousand, five hundred ninety-nine".