20702604379 has 2 divisors, whose sum is σ = 20702604380. Its totient is φ = 20702604378.

The previous prime is 20702604371. The next prime is 20702604449. The reversal of 20702604379 is 97340620702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20702604379 - 2³ = 20702604371 is a prime.

It is not a weakly prime, because it can be changed into another prime (20702604371) by changing a digit.

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 as a sum of consecutive naturals, namely, 10351302189 + 10351302190.

It is an arithmetic number, because the mean of its divisors is an integer number (10351302190).

Almost surely, 2^20702604379 is an apocalyptic number.

20702604379 is a deficient number, since it is larger than the sum of its proper divisors (1).

20702604379 is an equidigital number, since it uses as much as digits as its factorization.

20702604379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 20702604379 in words is "twenty billion, seven hundred two million, six hundred four thousand, three hundred seventy-nine".