20615155700007 has 16 divisors (see below), whose sum is σ = 30017546824320. Its totient is φ = 12480756338400.

The previous prime is 20615155699997. The next prime is 20615155700059. The reversal of 20615155700007 is 70000755151602.

It is not a de Polignac number, because 20615155700007 - 2³⁴ = 20597975830823 is a prime.

It is a super-2 number, since 2×20615155700007² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20615155200007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331903957 + ... + 331966062.

It is an arithmetic number, because the mean of its divisors is an integer number (1876096676520).

Almost surely, 2^{20615155700007} is an apocalyptic number.

20615155700007 is a deficient number, since it is larger than the sum of its proper divisors (9402391124313).

20615155700007 is a wasteful number, since it uses less digits than its factorization.

20615155700007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663870974.

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 20615155700007 in words is "twenty trillion, six hundred fifteen billion, one hundred fifty-five million, seven hundred thousand, seven".