20356453100 has 36 divisors (see below), whose sum is σ = 44180953488. Its totient is φ = 8141208000.

The previous prime is 20356453079. The next prime is 20356453151. The reversal of 20356453100 is 135465302.

It is a super-2 number, since 2×20356453100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 748745 + ... + 775455.

It is an arithmetic number, because the mean of its divisors is an integer number (1227248708).

Almost surely, 2^20356453100 is an apocalyptic number.

20356453100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20356453100 is an abundant number, since it is smaller than the sum of its proper divisors (23824500388).

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

20356453100 is a wasteful number, since it uses less digits than its factorization.

20356453100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34346 (or 34339 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 20356453100 in words is "twenty billion, three hundred fifty-six million, four hundred fifty-three thousand, one hundred".