20893973767 has 2 divisors, whose sum is σ = 20893973768. Its totient is φ = 20893973766.

The previous prime is 20893973759. The next prime is 20893973801. The reversal of 20893973767 is 76737939802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20893973767 - 2³ = 20893973759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20893473767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10446986883 + 10446986884.

It is an arithmetic number, because the mean of its divisors is an integer number (10446986884).

Almost surely, 2^20893973767 is an apocalyptic number.

20893973767 is a deficient number, since it is larger than the sum of its proper divisors (1).

20893973767 is an equidigital number, since it uses as much as digits as its factorization.

20893973767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24004512, while the sum is 61.

The spelling of 20893973767 in words is "twenty billion, eight hundred ninety-three million, nine hundred seventy-three thousand, seven hundred sixty-seven".