64743160491 has 32 divisors (see below), whose sum is σ = 98926617600. Its totient is φ = 41825426400.

The previous prime is 64743160463. The next prime is 64743160567. The reversal of 64743160491 is 19406134746.

64743160491 is a `hidden beast` number, since 6 + 4 + 7 + 4 + 31 + 604 + 9 + 1 = 666.

It is not a de Polignac number, because 64743160491 - 2⁹ = 64743159979 is a prime.

It is a super-2 number, since 2×64743160491² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64743161491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124401 + ... + 380738.

It is an arithmetic number, because the mean of its divisors is an integer number (3091456800).

Almost surely, 2^64743160491 is an apocalyptic number.

64743160491 is a deficient number, since it is larger than the sum of its proper divisors (34183457109).

64743160491 is a wasteful number, since it uses less digits than its factorization.

64743160491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505296 (or 505290 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 64743160491 in words is "sixty-four billion, seven hundred forty-three million, one hundred sixty thousand, four hundred ninety-one".