20033668520 has 32 divisors (see below), whose sum is σ = 45096052320. Its totient is φ = 8009858880.

The previous prime is 20033668517. The next prime is 20033668597. The reversal of 20033668520 is 2586633002.

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, 21926 + ... + 201365.

It is an arithmetic number, because the mean of its divisors is an integer number (1409251635).

Almost surely, 2^20033668520 is an apocalyptic number.

20033668520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20033668520 is an abundant number, since it is smaller than the sum of its proper divisors (25062383800).

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

20033668520 is a wasteful number, since it uses less digits than its factorization.

20033668520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225545 (or 225541 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 20033668520 in words is "twenty billion, thirty-three million, six hundred sixty-eight thousand, five hundred twenty".