20100611154 has 64 divisors (see below), whose sum is σ = 43865063424. Its totient is φ = 6103342656.

The previous prime is 20100611059. The next prime is 20100611171. The reversal of 20100611154 is 45111600102.

It is a self number, because there is not a number n which added to its sum of digits gives 20100611154.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10765329 + ... + 10767195.

It is an arithmetic number, because the mean of its divisors is an integer number (685391616).

Almost surely, 2^20100611154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100611154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21932531712).

20100611154 is an abundant number, since it is smaller than the sum of its proper divisors (23764452270).

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

20100611154 is a wasteful number, since it uses less digits than its factorization.

20100611154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631.

The product of its (nonzero) digits is 240, while the sum is 21.

The spelling of 20100611154 in words is "twenty billion, one hundred million, six hundred eleven thousand, one hundred fifty-four".