64690922027 has 2 divisors, whose sum is σ = 64690922028. Its totient is φ = 64690922026.

The previous prime is 64690921993. The next prime is 64690922033. The reversal of 64690922027 is 72022909646.

64690922027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64690922027 - 2²⁴ = 64674144811 is a prime.

It is not a weakly prime, because it can be changed into another prime (64690922327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32345461013 + 32345461014.

It is an arithmetic number, because the mean of its divisors is an integer number (32345461014).

Almost surely, 2^64690922027 is an apocalyptic number.

64690922027 is a deficient number, since it is larger than the sum of its proper divisors (1).

64690922027 is an equidigital number, since it uses as much as digits as its factorization.

64690922027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 64690922027 in words is "sixty-four billion, six hundred ninety million, nine hundred twenty-two thousand, twenty-seven".