20367280768 has 16 divisors (see below), whose sum is σ = 40575442410. Its totient is φ = 10183640320.

The previous prime is 20367280751. The next prime is 20367280777. The reversal of 20367280768 is 86708276302.

It can be written as a sum of positive squares in only one way, i.e., 18760233024 + 1607047744 = 136968^2 + 40088^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×20367280768² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79559563 + ... + 79559818.

Almost surely, 2^20367280768 is an apocalyptic number.

It is an amenable number.

20367280768 is a deficient number, since it is larger than the sum of its proper divisors (20208161642).

20367280768 is an equidigital number, since it uses as much as digits as its factorization.

20367280768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159119395 (or 159119383 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 20367280768 in words is "twenty billion, three hundred sixty-seven million, two hundred eighty thousand, seven hundred sixty-eight".