51906432918 has 16 divisors (see below), whose sum is σ = 109276701120. Its totient is φ = 16391505096.

The previous prime is 51906432889. The next prime is 51906432931. The reversal of 51906432918 is 81923460915.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227659680 + ... + 227659907.

It is an arithmetic number, because the mean of its divisors is an integer number (6829793820).

Almost surely, 2^51906432918 is an apocalyptic number.

51906432918 is an abundant number, since it is smaller than the sum of its proper divisors (57370268202).

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

51906432918 is a wasteful number, since it uses less digits than its factorization.

51906432918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455319611.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 51906432918 in words is "fifty-one billion, nine hundred six million, four hundred thirty-two thousand, nine hundred eighteen".