20933375780 has 24 divisors (see below), whose sum is σ = 46273778880. Its totient is φ = 7932647520.

The previous prime is 20933375717. The next prime is 20933375807. The reversal of 20933375780 is 8757333902.

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, 27543536 + ... + 27544295.

It is an arithmetic number, because the mean of its divisors is an integer number (1928074120).

Almost surely, 2^20933375780 is an apocalyptic number.

20933375780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20933375780 is an abundant number, since it is smaller than the sum of its proper divisors (25340403100).

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

20933375780 is a wasteful number, since it uses less digits than its factorization.

20933375780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55087859 (or 55087857 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 20933375780 in words is "twenty billion, nine hundred thirty-three million, three hundred seventy-five thousand, seven hundred eighty".