20021854704 has 40 divisors (see below), whose sum is σ = 52925993472. Its totient is φ = 6518742720.

The previous prime is 20021854693. The next prime is 20021854739. The reversal of 20021854704 is 40745812002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4848192 + ... + 4852319.

Almost surely, 2^20021854704 is an apocalyptic number.

20021854704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20021854704 is an abundant number, since it is smaller than the sum of its proper divisors (32904138768).

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

20021854704 is a wasteful number, since it uses less digits than its factorization.

20021854704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9700565 (or 9700559 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 20021854704 in words is "twenty billion, twenty-one million, eight hundred fifty-four thousand, seven hundred four".