64245456323503 has 32 divisors (see below), whose sum is σ = 81677807277696. Its totient is φ = 49171860269568.

The previous prime is 64245456323437. The next prime is 64245456323561. The reversal of 64245456323503 is 30532365454246.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64245456323503 - 2²⁹ = 64244919452591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64245456323803) 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, 54564676 + ... + 55729657.

It is an arithmetic number, because the mean of its divisors is an integer number (2552431477428).

Almost surely, 2^{64245456323503} is an apocalyptic number.

64245456323503 is a deficient number, since it is larger than the sum of its proper divisors (17432350954193).

64245456323503 is a wasteful number, since it uses less digits than its factorization.

64245456323503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110294563.

The product of its (nonzero) digits is 31104000, while the sum is 52.

The spelling of 64245456323503 in words is "sixty-four trillion, two hundred forty-five billion, four hundred fifty-six million, three hundred twenty-three thousand, five hundred three".