20307234702779 has 2 divisors, whose sum is σ = 20307234702780. Its totient is φ = 20307234702778.

The previous prime is 20307234702763. The next prime is 20307234702829. The reversal of 20307234702779 is 97720743270302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20307234702779 - 2⁴ = 20307234702763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20307234702779.

It is not a weakly prime, because it can be changed into another prime (20307234702739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10153617351389 + 10153617351390.

It is an arithmetic number, because the mean of its divisors is an integer number (10153617351390).

Almost surely, 2^{20307234702779} is an apocalyptic number.

20307234702779 is a deficient number, since it is larger than the sum of its proper divisors (1).

20307234702779 is an equidigital number, since it uses as much as digits as its factorization.

20307234702779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6223392, while the sum is 53.

The spelling of 20307234702779 in words is "twenty trillion, three hundred seven billion, two hundred thirty-four million, seven hundred two thousand, seven hundred seventy-nine".