20542654550 has 24 divisors (see below), whose sum is σ = 41682914712. Its totient is φ = 7470056000.

The previous prime is 20542654541. The next prime is 20542654553. The reversal of 20542654550 is 5545624502.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542654553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18674591 + ... + 18675690.

It is an arithmetic number, because the mean of its divisors is an integer number (1736788113).

Almost surely, 2^20542654550 is an apocalyptic number.

20542654550 is an abundant number, since it is smaller than the sum of its proper divisors (21140260162).

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

20542654550 is a wasteful number, since it uses less digits than its factorization.

20542654550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37350304 (or 37350299 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 20542654550 in words is "twenty billion, five hundred forty-two million, six hundred fifty-four thousand, five hundred fifty".