20767502879 has 2 divisors, whose sum is σ = 20767502880. Its totient is φ = 20767502878.

The previous prime is 20767502849. The next prime is 20767502963. The reversal of 20767502879 is 97820576702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20767502879 - 2²⁴ = 20750725663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20767502879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20767502849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10383751439 + 10383751440.

It is an arithmetic number, because the mean of its divisors is an integer number (10383751440).

Almost surely, 2^20767502879 is an apocalyptic number.

20767502879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20767502879 is an equidigital number, since it uses as much as digits as its factorization.

20767502879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 20767502879 in words is "twenty billion, seven hundred sixty-seven million, five hundred two thousand, eight hundred seventy-nine".