20543253552 has 60 divisors (see below), whose sum is σ = 58001407464. Its totient is φ = 6787146240.

The previous prime is 20543253541. The next prime is 20543253571. The reversal of 20543253552 is 25535234502.

20543253552 is a `hidden beast` number, since 2 + 0 + 54 + 3 + 2 + 53 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 614974 + ... + 647517.

Almost surely, 2^20543253552 is an apocalyptic number.

It is an amenable number.

20543253552 is an abundant number, since it is smaller than the sum of its proper divisors (37458153912).

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

20543253552 is a wasteful number, since it uses less digits than its factorization.

20543253552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262618 (or 1262609 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 20543253552 in words is "twenty billion, five hundred forty-three million, two hundred fifty-three thousand, five hundred fifty-two".