20151652554 has 80 divisors (see below), whose sum is σ = 49306086720. Its totient is φ = 6100799040.

The previous prime is 20151652537. The next prime is 20151652597. The reversal of 20151652554 is 45525615102.

20151652554 is a `hidden beast` number, since 2 + 0 + 1 + 51 + 6 + 52 + 554 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2121187 + ... + 2130665.

It is an arithmetic number, because the mean of its divisors is an integer number (616326084).

Almost surely, 2^20151652554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20151652554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24653043360).

20151652554 is an abundant number, since it is smaller than the sum of its proper divisors (29154434166).

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

20151652554 is a wasteful number, since it uses less digits than its factorization.

20151652554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10697 (or 10688 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 20151652554 in words is "twenty billion, one hundred fifty-one million, six hundred fifty-two thousand, five hundred fifty-four".