51205308294 has 64 divisors (see below), whose sum is σ = 127449100800. Its totient is φ = 13382143488.

The previous prime is 51205308277. The next prime is 51205308299. The reversal of 51205308294 is 49280350215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51205308299) 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, 1083187 + ... + 1129470.

It is an arithmetic number, because the mean of its divisors is an integer number (1991392200).

Almost surely, 2^51205308294 is an apocalyptic number.

51205308294 is an abundant number, since it is smaller than the sum of its proper divisors (76243792506).

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

51205308294 is a wasteful number, since it uses less digits than its factorization.

51205308294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212717.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 51205308294 in words is "fifty-one billion, two hundred five million, three hundred eight thousand, two hundred ninety-four".