20757568762 has 16 divisors (see below), whose sum is σ = 35636981760. Its totient is φ = 8882956368.

The previous prime is 20757568739. The next prime is 20757568807. The reversal of 20757568762 is 26786575702.

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, 1085562 + ... + 1104517.

It is an arithmetic number, because the mean of its divisors is an integer number (2227311360).

Almost surely, 2^20757568762 is an apocalyptic number.

20757568762 is a deficient number, since it is larger than the sum of its proper divisors (14879412998).

20757568762 is a wasteful number, since it uses less digits than its factorization.

20757568762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190765.

The product of its (nonzero) digits is 9878400, while the sum is 55.

The spelling of 20757568762 in words is "twenty billion, seven hundred fifty-seven million, five hundred sixty-eight thousand, seven hundred sixty-two".