64344720453 has 16 divisors (see below), whose sum is σ = 92425561536. Its totient is φ = 39582547200.

The previous prime is 64344720439. The next prime is 64344720457. The reversal of 64344720453 is 35402744346.

It is not a de Polignac number, because 64344720453 - 2¹² = 64344716357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64344720457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185275 + ... + 403752.

It is an arithmetic number, because the mean of its divisors is an integer number (5776597596).

Almost surely, 2^64344720453 is an apocalyptic number.

It is an amenable number.

64344720453 is a deficient number, since it is larger than the sum of its proper divisors (28080841083).

64344720453 is a wasteful number, since it uses less digits than its factorization.

64344720453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591844.

The product of its (nonzero) digits is 967680, while the sum is 42.

The spelling of 64344720453 in words is "sixty-four billion, three hundred forty-four million, seven hundred twenty thousand, four hundred fifty-three".