20764446707 has 2 divisors, whose sum is σ = 20764446708. Its totient is φ = 20764446706.

The previous prime is 20764446653. The next prime is 20764446709. The reversal of 20764446707 is 70764446702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20764446707 is a prime.

Together with 20764446709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20764446709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382223353 + 10382223354.

It is an arithmetic number, because the mean of its divisors is an integer number (10382223354).

Almost surely, 2^20764446707 is an apocalyptic number.

20764446707 is a deficient number, since it is larger than the sum of its proper divisors (1).

20764446707 is an equidigital number, since it uses as much as digits as its factorization.

20764446707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1580544, while the sum is 47.

The spelling of 20764446707 in words is "twenty billion, seven hundred sixty-four million, four hundred forty-six thousand, seven hundred seven".