64353945023 has 4 divisors (see below), whose sum is σ = 64763842920. Its totient is φ = 63944047128.

The previous prime is 64353945013. The next prime is 64353945091. The reversal of 64353945023 is 32054935346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64353945023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64353945013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204948713 + ... + 204949026.

It is an arithmetic number, because the mean of its divisors is an integer number (16190960730).

Almost surely, 2^64353945023 is an apocalyptic number.

64353945023 is a deficient number, since it is larger than the sum of its proper divisors (409897897).

64353945023 is a wasteful number, since it uses less digits than its factorization.

64353945023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409897896.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 64353945023 in words is "sixty-four billion, three hundred fifty-three million, nine hundred forty-five thousand, twenty-three".