51031385146 has 16 divisors (see below), whose sum is σ = 87935655744. Its totient is φ = 21757273344.

The previous prime is 51031385117. The next prime is 51031385149. The reversal of 51031385146 is 64158313015.

51031385146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51031385149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9440560 + ... + 9445963.

It is an arithmetic number, because the mean of its divisors is an integer number (5495978484).

Almost surely, 2^51031385146 is an apocalyptic number.

51031385146 is a deficient number, since it is larger than the sum of its proper divisors (36904270598).

51031385146 is a wasteful number, since it uses less digits than its factorization.

51031385146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18886725.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 51031385146 in words is "fifty-one billion, thirty-one million, three hundred eighty-five thousand, one hundred forty-six".