20638062967 has 2 divisors, whose sum is σ = 20638062968. Its totient is φ = 20638062966.

The previous prime is 20638062931. The next prime is 20638062971. The reversal of 20638062967 is 76926083602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20638062967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20638062967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20638062167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10319031483 + 10319031484.

It is an arithmetic number, because the mean of its divisors is an integer number (10319031484).

Almost surely, 2^20638062967 is an apocalyptic number.

20638062967 is a deficient number, since it is larger than the sum of its proper divisors (1).

20638062967 is an equidigital number, since it uses as much as digits as its factorization.

20638062967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 20638062967 in words is "twenty billion, six hundred thirty-eight million, sixty-two thousand, nine hundred sixty-seven".