51155612612 has 48 divisors (see below), whose sum is σ = 99620032512. Its totient is φ = 22825376640.

The previous prime is 51155612603. The next prime is 51155612639. The reversal of 51155612612 is 21621655115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617293 + ... + 1648619.

It is an arithmetic number, because the mean of its divisors is an integer number (2075417344).

Almost surely, 2^51155612612 is an apocalyptic number.

51155612612 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51155612612 is a deficient number, since it is larger than the sum of its proper divisors (48464419900).

51155612612 is a wasteful number, since it uses less digits than its factorization.

51155612612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32388 (or 32386 counting only the distinct ones).

The product of its digits is 18000, while the sum is 35.

The spelling of 51155612612 in words is "fifty-one billion, one hundred fifty-five million, six hundred twelve thousand, six hundred twelve".