20534454552 has 32 divisors (see below), whose sum is σ = 51340078080. Its totient is φ = 6844292640.

The previous prime is 20534454541. The next prime is 20534454553. The reversal of 20534454552 is 25545443502.

It is a self number, because there is not a number n which added to its sum of digits gives 20534454552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20534454553) 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, 405777 + ... + 453567.

It is an arithmetic number, because the mean of its divisors is an integer number (1604377440).

Almost surely, 2^20534454552 is an apocalyptic number.

It is an amenable number.

20534454552 is an abundant number, since it is smaller than the sum of its proper divisors (30805623528).

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

20534454552 is a wasteful number, since it uses less digits than its factorization.

20534454552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65703 (or 65699 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 39.

It can be divided in two parts, 2053 and 4454552, that added together give a triangular number (4456605 = T₂₉₈₅).

The spelling of 20534454552 in words is "twenty billion, five hundred thirty-four million, four hundred fifty-four thousand, five hundred fifty-two".