20453484100 has 36 divisors (see below), whose sum is σ = 50724642304. Its totient is φ = 7012622880.

The previous prime is 20453484089. The next prime is 20453484113. The reversal of 20453484100 is 148435402.

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, 14608932 + ... + 14610331.

Almost surely, 2^20453484100 is an apocalyptic number.

20453484100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20453484100 is an abundant number, since it is smaller than the sum of its proper divisors (30271158204).

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

20453484100 is a wasteful number, since it uses less digits than its factorization.

20453484100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29219284 (or 29219277 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 20453484100 in words is "twenty billion, four hundred fifty-three million, four hundred eighty-four thousand, one hundred".