64501534641 has 8 divisors (see below), whose sum is σ = 86047151904. Its totient is φ = 42978470240.

The previous prime is 64501534597. The next prime is 64501534697. The reversal of 64501534641 is 14643510546.

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

It is a cyclic number.

It is not a de Polignac number, because 64501534641 - 2¹⁵ = 64501501873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64501534641.

It is not an unprimeable number, because it can be changed into a prime (64501534441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5631540 + ... + 5642981.

It is an arithmetic number, because the mean of its divisors is an integer number (10755893988).

Almost surely, 2^64501534641 is an apocalyptic number.

It is an amenable number.

64501534641 is a deficient number, since it is larger than the sum of its proper divisors (21545617263).

64501534641 is a wasteful number, since it uses less digits than its factorization.

64501534641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11276431.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 64501534641 in words is "sixty-four billion, five hundred one million, five hundred thirty-four thousand, six hundred forty-one".