20530552152 has 64 divisors (see below), whose sum is σ = 56007792000. Its totient is φ = 6219671040.

The previous prime is 20530552151. The next prime is 20530552171. The reversal of 20530552152 is 25125503502.

It is a super-2 number, since 2×20530552152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530552151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221099 + ... + 1237797.

It is an arithmetic number, because the mean of its divisors is an integer number (875121750).

Almost surely, 2^20530552152 is an apocalyptic number.

20530552152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20530552152 is an abundant number, since it is smaller than the sum of its proper divisors (35477239848).

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

20530552152 is a wasteful number, since it uses less digits than its factorization.

20530552152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21376 (or 21372 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 20530552152 in words is "twenty billion, five hundred thirty million, five hundred fifty-two thousand, one hundred fifty-two".