20767666967 has 4 divisors (see below), whose sum is σ = 20768026776. Its totient is φ = 20767307160.

The previous prime is 20767666951. The next prime is 20767666981. The reversal of 20767666967 is 76966676702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20767666967 - 2⁴ = 20767666951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20767666937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71588 + ... + 216009.

It is an arithmetic number, because the mean of its divisors is an integer number (5192006694).

Almost surely, 2^20767666967 is an apocalyptic number.

20767666967 is a deficient number, since it is larger than the sum of its proper divisors (359809).

20767666967 is an equidigital number, since it uses as much as digits as its factorization.

20767666967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359808.

The product of its (nonzero) digits is 48009024, while the sum is 62.

The spelling of 20767666967 in words is "twenty billion, seven hundred sixty-seven million, six hundred sixty-six thousand, nine hundred sixty-seven".