51618104612 has 12 divisors (see below), whose sum is σ = 95085982320. Its totient is φ = 24450681096.

The previous prime is 51618104609. The next prime is 51618104639. The reversal of 51618104612 is 21640181615.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339592718 + ... + 339592869.

It is an arithmetic number, because the mean of its divisors is an integer number (7923831860).

Almost surely, 2^51618104612 is an apocalyptic number.

It is an amenable number.

51618104612 is a deficient number, since it is larger than the sum of its proper divisors (43467877708).

51618104612 is a wasteful number, since it uses less digits than its factorization.

51618104612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679185610 (or 679185608 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 51618104612 in words is "fifty-one billion, six hundred eighteen million, one hundred four thousand, six hundred twelve".