20500455045252 has 48 divisors (see below), whose sum is σ = 58873101671552. Its totient is φ = 5406713418240.

The previous prime is 20500455045241. The next prime is 20500455045277. The reversal of 20500455045252 is 25254055400502.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 20500455045252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9386654149 + ... + 9386656332.

Almost surely, 2^{20500455045252} is an apocalyptic number.

It is an amenable number.

20500455045252 is an abundant number, since it is smaller than the sum of its proper divisors (38372646626300).

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

20500455045252 is a wasteful number, since it uses less digits than its factorization.

20500455045252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18773310508 (or 18773310506 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 39.

The spelling of 20500455045252 in words is "twenty trillion, five hundred billion, four hundred fifty-five million, forty-five thousand, two hundred fifty-two".