64423314545 has 16 divisors (see below), whose sum is σ = 80022159360. Its totient is φ = 49731347904.

The previous prime is 64423314467. The next prime is 64423314581. The reversal of 64423314545 is 54541332446.

It is a cyclic number.

It is not a de Polignac number, because 64423314545 - 2²⁶ = 64356205681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107552 + ... + 374718.

It is an arithmetic number, because the mean of its divisors is an integer number (5001384960).

Almost surely, 2^64423314545 is an apocalyptic number.

It is an amenable number.

64423314545 is a deficient number, since it is larger than the sum of its proper divisors (15598844815).

64423314545 is a wasteful number, since it uses less digits than its factorization.

64423314545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268864.

The product of its digits is 691200, while the sum is 41.

The spelling of 64423314545 in words is "sixty-four billion, four hundred twenty-three million, three hundred fourteen thousand, five hundred forty-five".