20116761642515 has 16 divisors (see below), whose sum is σ = 24825640224000. Its totient is φ = 15640153274592.

The previous prime is 20116761642493. The next prime is 20116761642529. The reversal of 20116761642515 is 51524616761102.

It is a cyclic number.

It is not a de Polignac number, because 20116761642515 - 2¹⁴ = 20116761626131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20116761642515.

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, 235048505 + ... + 235134074.

It is an arithmetic number, because the mean of its divisors is an integer number (1551602514000).

Almost surely, 2^{20116761642515} is an apocalyptic number.

20116761642515 is a deficient number, since it is larger than the sum of its proper divisors (4708878581485).

20116761642515 is a wasteful number, since it uses less digits than its factorization.

20116761642515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470182826.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 20116761642515 in words is "twenty trillion, one hundred sixteen billion, seven hundred sixty-one million, six hundred forty-two thousand, five hundred fifteen".