20473447100 has 18 divisors (see below), whose sum is σ = 44427380424. Its totient is φ = 8189378800.

The previous prime is 20473447091. The next prime is 20473447117. The reversal of 20473447100 is 174437402.

It is a super-3 number, since 3×20473447100³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102367136 + ... + 102367335.

Almost surely, 2^20473447100 is an apocalyptic number.

20473447100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20473447100 is an abundant number, since it is smaller than the sum of its proper divisors (23953933324).

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

20473447100 is a wasteful number, since it uses less digits than its factorization.

20473447100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204734485 (or 204734478 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The spelling of 20473447100 in words is "twenty billion, four hundred seventy-three million, four hundred forty-seven thousand, one hundred".