51404545874015 has 4 divisors (see below), whose sum is σ = 61685455048824. Its totient is φ = 41123636699208.

The previous prime is 51404545873981. The next prime is 51404545874021. The reversal of 51404545874015 is 51047854540415.

51404545874015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51404545874015 - 2¹⁴ = 51404545857631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5140454587397 + ... + 5140454587406.

It is an arithmetic number, because the mean of its divisors is an integer number (15421363762206).

Almost surely, 2^{51404545874015} is an apocalyptic number.

51404545874015 is a deficient number, since it is larger than the sum of its proper divisors (10280909174809).

51404545874015 is a wasteful number, since it uses less digits than its factorization.

51404545874015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280909174808.

The product of its (nonzero) digits is 8960000, while the sum is 53.

The spelling of 51404545874015 in words is "fifty-one trillion, four hundred four billion, five hundred forty-five million, eight hundred seventy-four thousand, fifteen".