20117563370515 has 16 divisors (see below), whose sum is σ = 26364252067776. Its totient is φ = 14646806697600.

The previous prime is 20117563370507. The next prime is 20117563370533. The reversal of 20117563370515 is 51507336571102.

It is not a de Polignac number, because 20117563370515 - 2³ = 20117563370507 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, 2179579716 + ... + 2179588945.

It is an arithmetic number, because the mean of its divisors is an integer number (1647765754236).

Almost surely, 2^{20117563370515} is an apocalyptic number.

20117563370515 is a deficient number, since it is larger than the sum of its proper divisors (6246688697261).

20117563370515 is a wasteful number, since it uses less digits than its factorization.

20117563370515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359168750.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 20117563370515 in words is "twenty trillion, one hundred seventeen billion, five hundred sixty-three million, three hundred seventy thousand, five hundred fifteen".