64220940127 has 2 divisors, whose sum is σ = 64220940128. Its totient is φ = 64220940126.

The previous prime is 64220940083. The next prime is 64220940181. The reversal of 64220940127 is 72104902246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64220940127 - 2⁷ = 64220939999 is a prime.

It is a super-2 number, since 2×64220940127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64220940227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32110470063 + 32110470064.

It is an arithmetic number, because the mean of its divisors is an integer number (32110470064).

Almost surely, 2^64220940127 is an apocalyptic number.

64220940127 is a deficient number, since it is larger than the sum of its proper divisors (1).

64220940127 is an equidigital number, since it uses as much as digits as its factorization.

64220940127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 64220940127 in words is "sixty-four billion, two hundred twenty million, nine hundred forty thousand, one hundred twenty-seven".