51015460254 has 24 divisors (see below), whose sum is σ = 112149691080. Its totient is φ = 15459230160.

The previous prime is 51015460241. The next prime is 51015460273. The reversal of 51015460254 is 45206451015.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35133889 + ... + 35135340.

It is an arithmetic number, because the mean of its divisors is an integer number (4672903795).

Almost surely, 2^51015460254 is an apocalyptic number.

51015460254 is an abundant number, since it is smaller than the sum of its proper divisors (61134230826).

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

51015460254 is a wasteful number, since it uses less digits than its factorization.

51015460254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70269256 (or 70269245 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 51015460254 in words is "fifty-one billion, fifteen million, four hundred sixty thousand, two hundred fifty-four".