20534554554 has 32 divisors (see below), whose sum is σ = 42082153344. Its totient is φ = 6676101120.

The previous prime is 20534554517. The next prime is 20534554559. The reversal of 20534554554 is 45545543502.

It is not an unprimeable number, because it can be changed into a prime (20534554559) 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, 1140627 + ... + 1158489.

It is an arithmetic number, because the mean of its divisors is an integer number (1315067292).

Almost surely, 2^20534554554 is an apocalyptic number.

20534554554 is an abundant number, since it is smaller than the sum of its proper divisors (21547598790).

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

20534554554 is a wasteful number, since it uses less digits than its factorization.

20534554554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22582.

The product of its (nonzero) digits is 1200000, while the sum is 42.

The spelling of 20534554554 in words is "twenty billion, five hundred thirty-four million, five hundred fifty-four thousand, five hundred fifty-four".