64545163249 has 8 divisors (see below), whose sum is σ = 74442653120. Its totient is φ = 54816861456.

The previous prime is 64545163237. The next prime is 64545163259. The reversal of 64545163249 is 94236154546.

64545163249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64545163249 - 2²¹ = 64543066097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64545163259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42296199 + ... + 42297724.

It is an arithmetic number, because the mean of its divisors is an integer number (9305331640).

Almost surely, 2^64545163249 is an apocalyptic number.

It is an amenable number.

64545163249 is a deficient number, since it is larger than the sum of its proper divisors (9897489871).

64545163249 is a wasteful number, since it uses less digits than its factorization.

64545163249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84594039.

The product of its digits is 3110400, while the sum is 49.

The spelling of 64545163249 in words is "sixty-four billion, five hundred forty-five million, one hundred sixty-three thousand, two hundred forty-nine".