64291240365 has 48 divisors (see below), whose sum is σ = 113383670400. Its totient is φ = 31084366720.

The previous prime is 64291240327. The next prime is 64291240381. The reversal of 64291240365 is 56304219246.

It is not a de Polignac number, because 64291240365 - 2¹⁷ = 64291109293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 602251 + ... + 700919.

It is an arithmetic number, because the mean of its divisors is an integer number (2362159800).

Almost surely, 2^64291240365 is an apocalyptic number.

It is an amenable number.

64291240365 is a deficient number, since it is larger than the sum of its proper divisors (49092430035).

64291240365 is a wasteful number, since it uses less digits than its factorization.

64291240365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99058 (or 99047 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 64291240365 in words is "sixty-four billion, two hundred ninety-one million, two hundred forty thousand, three hundred sixty-five".