20914633679 has 2 divisors, whose sum is σ = 20914633680. Its totient is φ = 20914633678.

The previous prime is 20914633661. The next prime is 20914633759. The reversal of 20914633679 is 97633641902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20914633679 is a prime.

It is a super-2 number, since 2×20914633679² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20914630679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457316839 + 10457316840.

It is an arithmetic number, because the mean of its divisors is an integer number (10457316840).

Almost surely, 2^20914633679 is an apocalyptic number.

20914633679 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914633679 is an equidigital number, since it uses as much as digits as its factorization.

20914633679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 20914633679 in words is "twenty billion, nine hundred fourteen million, six hundred thirty-three thousand, six hundred seventy-nine".