51604416039 has 32 divisors (see below), whose sum is σ = 77114707200. Its totient is φ = 30420230400.

The previous prime is 51604416037. The next prime is 51604416089. The reversal of 51604416039 is 93061440615.

51604416039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51604416039 - 2¹ = 51604416037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51604415988 and 51604416006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51604416037) 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, 5671884 + ... + 5680974.

It is an arithmetic number, because the mean of its divisors is an integer number (2409834600).

Almost surely, 2^51604416039 is an apocalyptic number.

51604416039 is a deficient number, since it is larger than the sum of its proper divisors (25510291161).

51604416039 is a wasteful number, since it uses less digits than its factorization.

51604416039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13791.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 51604416039 in words is "fifty-one billion, six hundred four million, four hundred sixteen thousand, thirty-nine".