51279298590 has 64 divisors (see below), whose sum is σ = 132807693312. Its totient is φ = 12596841600.

The previous prime is 51279298549. The next prime is 51279298601. The reversal of 51279298590 is 9589297215.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51279298590.

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, 57595 + ... + 325385.

It is an arithmetic number, because the mean of its divisors is an integer number (2075120208).

Almost surely, 2^51279298590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51279298590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66403846656).

51279298590 is an abundant number, since it is smaller than the sum of its proper divisors (81528394722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51279298590 is a wasteful number, since it uses less digits than its factorization.

51279298590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268305.

The product of its (nonzero) digits is 4082400, while the sum is 57.

The spelling of 51279298590 in words is "fifty-one billion, two hundred seventy-nine million, two hundred ninety-eight thousand, five hundred ninety".