51255150777778 has 32 divisors (see below), whose sum is σ = 79201429084800. Its totient is φ = 24862727460480.

The previous prime is 51255150777689. The next prime is 51255150777863. The reversal of 51255150777778 is 87777705155215.

51255150777778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 526363251 + ... + 526460617.

It is an arithmetic number, because the mean of its divisors is an integer number (2475044658900).

Almost surely, 2^{51255150777778} is an apocalyptic number.

51255150777778 is a deficient number, since it is larger than the sum of its proper divisors (27946278307022).

51255150777778 is a wasteful number, since it uses less digits than its factorization.

51255150777778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138642.

The product of its (nonzero) digits is 168070000, while the sum is 67.

The spelling of 51255150777778 in words is "fifty-one trillion, two hundred fifty-five billion, one hundred fifty million, seven hundred seventy-seven thousand, seven hundred seventy-eight".