51505850515 has 16 divisors (see below), whose sum is σ = 73707752448. Its totient is φ = 33782718816.

The previous prime is 51505850507. The next prime is 51505850573.

51505850515 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51505850515 - 2³ = 51505850507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31990407 + ... + 31992016.

It is an arithmetic number, because the mean of its divisors is an integer number (4606734528).

Almost surely, 2^51505850515 is an apocalyptic number.

51505850515 is a deficient number, since it is larger than the sum of its proper divisors (22201901933).

51505850515 is a wasteful number, since it uses less digits than its factorization.

51505850515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63982458.

The product of its (nonzero) digits is 125000, while the sum is 40.

The spelling of 51505850515 in words is "fifty-one billion, five hundred five million, eight hundred fifty thousand, five hundred fifteen".