20767681364 has 12 divisors (see below), whose sum is σ = 37923592224. Its totient is φ = 9932369304.

The previous prime is 20767681357. The next prime is 20767681379. The reversal of 20767681364 is 46318676702.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112867742 + ... + 112867925.

It is an arithmetic number, because the mean of its divisors is an integer number (3160299352).

Almost surely, 2^20767681364 is an apocalyptic number.

It is an amenable number.

20767681364 is a deficient number, since it is larger than the sum of its proper divisors (17155910860).

20767681364 is a wasteful number, since it uses less digits than its factorization.

20767681364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225735694 (or 225735692 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 20767681364 in words is "twenty billion, seven hundred sixty-seven million, six hundred eighty-one thousand, three hundred sixty-four".