20154645102 has 16 divisors (see below), whose sum is σ = 41609590272. Its totient is φ = 6501498360.

The previous prime is 20154645079. The next prime is 20154645107.

20154645102 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 20154645102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154645107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54178968 + ... + 54179339.

It is an arithmetic number, because the mean of its divisors is an integer number (2600599392).

Almost surely, 2^20154645102 is an apocalyptic number.

20154645102 is an abundant number, since it is smaller than the sum of its proper divisors (21454945170).

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

20154645102 is a wasteful number, since it uses less digits than its factorization.

20154645102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108358343.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 20154645102 in words is "twenty billion, one hundred fifty-four million, six hundred forty-five thousand, one hundred two".