64745201671 has 2 divisors, whose sum is σ = 64745201672. Its totient is φ = 64745201670.

The previous prime is 64745201663. The next prime is 64745201707. The reversal of 64745201671 is 17610254746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64745201671 - 2³ = 64745201663 is a prime.

It is a super-2 number, since 2×64745201671² (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 (64745201371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32372600835 + 32372600836.

It is an arithmetic number, because the mean of its divisors is an integer number (32372600836).

Almost surely, 2^64745201671 is an apocalyptic number.

64745201671 is a deficient number, since it is larger than the sum of its proper divisors (1).

64745201671 is an equidigital number, since it uses as much as digits as its factorization.

64745201671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 64745201671 in words is "sixty-four billion, seven hundred forty-five million, two hundred one thousand, six hundred seventy-one".