20892602981088 has 144 divisors (see below), whose sum is σ = 61998988929696. Its totient is φ = 6661145272320.

The previous prime is 20892602981057. The next prime is 20892602981093. The reversal of 20892602981088 is 88018920629802.

20892602981088 is a `hidden beast` number, since 2 + 0 + 8 + 9 + 2 + 602 + 9 + 8 + 10 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231536556 + ... + 231626772.

It is an arithmetic number, because the mean of its divisors is an integer number (430548534234).

Almost surely, 2^{20892602981088} is an apocalyptic number.

It is an amenable number.

20892602981088 is an abundant number, since it is smaller than the sum of its proper divisors (41106385948608).

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

20892602981088 is a wasteful number, since it uses less digits than its factorization.

20892602981088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125217 (or 125206 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 20892602981088 in words is "twenty trillion, eight hundred ninety-two billion, six hundred two million, nine hundred eighty-one thousand, eighty-eight".