51090356516 has 12 divisors (see below), whose sum is σ = 89587302000. Its totient is φ = 25493984520.

The previous prime is 51090356507. The next prime is 51090356549. The reversal of 51090356516 is 61565309015.

It is a happy number.

It is a super-2 number, since 2×51090356516² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 12796190 + ... + 12800181.

It is an arithmetic number, because the mean of its divisors is an integer number (7465608500).

Almost surely, 2^51090356516 is an apocalyptic number.

It is an amenable number.

51090356516 is a deficient number, since it is larger than the sum of its proper divisors (38496945484).

51090356516 is a wasteful number, since it uses less digits than its factorization.

51090356516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25596874 (or 25596872 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 41.

The spelling of 51090356516 in words is "fifty-one billion, ninety million, three hundred fifty-six thousand, five hundred sixteen".