20435231937904 has 40 divisors (see below), whose sum is σ = 45463894533248. Its totient is φ = 8716449631680.

The previous prime is 20435231937871. The next prime is 20435231937907. The reversal of 20435231937904 is 40973913253402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20435231937907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432339942 + ... + 432387205.

Almost surely, 2^{20435231937904} is an apocalyptic number.

It is an amenable number.

20435231937904 is an abundant number, since it is smaller than the sum of its proper divisors (25028662595344).

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

20435231937904 is a wasteful number, since it uses less digits than its factorization.

20435231937904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864727373 (or 864727367 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 20435231937904 in words is "twenty trillion, four hundred thirty-five billion, two hundred thirty-one million, nine hundred thirty-seven thousand, nine hundred four".