20537535602100 has 72 divisors (see below), whose sum is σ = 64823930565408. Its totient is φ = 4978796508800.

The previous prime is 20537535602081. The next prime is 20537535602141. The reversal of 20537535602100 is 120653573502.

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, 3111744519 + ... + 3111751118.

It is an arithmetic number, because the mean of its divisors is an integer number (900332368964).

Almost surely, 2^{20537535602100} is an apocalyptic number.

20537535602100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20537535602100 is an abundant number, since it is smaller than the sum of its proper divisors (44286394963308).

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

20537535602100 is a wasteful number, since it uses less digits than its factorization.

20537535602100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223495665 (or 6223495658 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 39.

The spelling of 20537535602100 in words is "twenty trillion, five hundred thirty-seven billion, five hundred thirty-five million, six hundred two thousand, one hundred".