51516116506 has 8 divisors (see below), whose sum is σ = 77276041920. Its totient is φ = 25757435868.

The previous prime is 51516116489. The next prime is 51516116579. The reversal of 51516116506 is 60561161515.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 199746 + ... + 378061.

It is an arithmetic number, because the mean of its divisors is an integer number (9659505240).

Almost surely, 2^51516116506 is an apocalyptic number.

51516116506 is a deficient number, since it is larger than the sum of its proper divisors (25759925414).

51516116506 is a wasteful number, since it uses less digits than its factorization.

51516116506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622388.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 51516116506 in words is "fifty-one billion, five hundred sixteen million, one hundred sixteen thousand, five hundred six".