64245430231544 has 32 divisors (see below), whose sum is σ = 120486680992800. Its totient is φ = 32115649438080.

The previous prime is 64245430231523. The next prime is 64245430231573. The reversal of 64245430231544 is 44513203454246.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806364542 + ... + 806444210.

It is an arithmetic number, because the mean of its divisors is an integer number (3765208781025).

Almost surely, 2^{64245430231544} is an apocalyptic number.

It is an amenable number.

64245430231544 is a deficient number, since it is larger than the sum of its proper divisors (56241250761256).

64245430231544 is a wasteful number, since it uses less digits than its factorization.

64245430231544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100583 (or 100579 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 47.

The spelling of 64245430231544 in words is "sixty-four trillion, two hundred forty-five billion, four hundred thirty million, two hundred thirty-one thousand, five hundred forty-four".