51642492118 has 16 divisors (see below), whose sum is σ = 93737633184. Its totient is φ = 20830584960.

The previous prime is 51642492059. The next prime is 51642492137. The reversal of 51642492118 is 81129424615.

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, 108492393 + ... + 108492868.

It is an arithmetic number, because the mean of its divisors is an integer number (5858602074).

Almost surely, 2^51642492118 is an apocalyptic number.

51642492118 is a deficient number, since it is larger than the sum of its proper divisors (42095141066).

51642492118 is a wasteful number, since it uses less digits than its factorization.

51642492118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216985287.

The product of its digits is 138240, while the sum is 43.

The spelling of 51642492118 in words is "fifty-one billion, six hundred forty-two million, four hundred ninety-two thousand, one hundred eighteen".