51246551328 has 96 divisors (see below), whose sum is σ = 161831255040. Its totient is φ = 13871243520.

The previous prime is 51246551287. The next prime is 51246551353. The reversal of 51246551328 is 82315564215.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 51246551328.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1994068 + ... + 2019603.

It is an arithmetic number, because the mean of its divisors is an integer number (1685742240).

Almost surely, 2^51246551328 is an apocalyptic number.

It is an amenable number.

51246551328 is an abundant number, since it is smaller than the sum of its proper divisors (110584703712).

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

51246551328 is a wasteful number, since it uses less digits than its factorization.

51246551328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013710 (or 4013702 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 51246551328 in words is "fifty-one billion, two hundred forty-six million, five hundred fifty-one thousand, three hundred twenty-eight".