51622641521515 has 16 divisors (see below), whose sum is σ = 62346679146432. Its totient is φ = 41031815370624.

The previous prime is 51622641521461. The next prime is 51622641521519. The reversal of 51622641521515 is 51512514622615.

It is a cyclic number.

It is not a de Polignac number, because 51622641521515 - 2¹¹ = 51622641519467 is a prime.

It is a super-3 number, since 3×51622641521515³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51622641521519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7328017 + ... + 12527773.

It is an arithmetic number, because the mean of its divisors is an integer number (3896667446652).

Almost surely, 2^{51622641521515} is an apocalyptic number.

51622641521515 is a deficient number, since it is larger than the sum of its proper divisors (10724037624917).

51622641521515 is a wasteful number, since it uses less digits than its factorization.

51622641521515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212566.

The product of its digits is 720000, while the sum is 46.

The spelling of 51622641521515 in words is "fifty-one trillion, six hundred twenty-two billion, six hundred forty-one million, five hundred twenty-one thousand, five hundred fifteen".