20013653500155 has 24 divisors (see below), whose sum is σ = 39646094553312. Its totient is φ = 9149098742784.

The previous prime is 20013653500153. The next prime is 20013653500187. The reversal of 20013653500155 is 55100535631002.

20013653500155 is a `hidden beast` number, since 2 + 0 + 0 + 136 + 5 + 3 + 500 + 15 + 5 = 666.

It is not a de Polignac number, because 20013653500155 - 2¹ = 20013653500153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013653500153) 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 23 ways as a sum of consecutive naturals, for example, 31767703654 + ... + 31767704283.

It is an arithmetic number, because the mean of its divisors is an integer number (1651920606388).

Almost surely, 2^{20013653500155} is an apocalyptic number.

20013653500155 is a deficient number, since it is larger than the sum of its proper divisors (19632441053157).

20013653500155 is a wasteful number, since it uses less digits than its factorization.

20013653500155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63535407955 (or 63535407952 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The spelling of 20013653500155 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, five hundred thousand, one hundred fifty-five".