20552151500 has 24 divisors (see below), whose sum is σ = 44885899968. Its totient is φ = 8220860400.

The previous prime is 20552151427. The next prime is 20552151583. The reversal of 20552151500 is 515125502.

It is a self number, because there is not a number n which added to its sum of digits gives 20552151500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20551652 + ... + 20552651.

It is an arithmetic number, because the mean of its divisors is an integer number (1870245832).

Almost surely, 2^20552151500 is an apocalyptic number.

20552151500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20552151500 is an abundant number, since it is smaller than the sum of its proper divisors (24333748468).

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

20552151500 is a wasteful number, since it uses less digits than its factorization.

20552151500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41104322 (or 41104310 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 20552151500 in words is "twenty billion, five hundred fifty-two million, one hundred fifty-one thousand, five hundred".