20154134152136 has 64 divisors (see below), whose sum is σ = 40869131688000. Its totient is φ = 9288134922240.

The previous prime is 20154134152127. The next prime is 20154134152177. The reversal of 20154134152136 is 63125143145102.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 20154134152136.

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, 10714325 + ... + 12454116.

It is an arithmetic number, because the mean of its divisors is an integer number (638580182625).

Almost surely, 2^{20154134152136} is an apocalyptic number.

It is an amenable number.

20154134152136 is an abundant number, since it is smaller than the sum of its proper divisors (20714997535864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20154134152136 is a wasteful number, since it uses less digits than its factorization.

20154134152136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23168622 (or 23168618 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 20154134152136 its reverse (63125143145102), we get a palindrome (83279277297238).

The spelling of 20154134152136 in words is "twenty trillion, one hundred fifty-four billion, one hundred thirty-four million, one hundred fifty-two thousand, one hundred thirty-six".