64872382465 has 16 divisors (see below), whose sum is σ = 84974129856. Its totient is φ = 47151979200.

The previous prime is 64872382459. The next prime is 64872382507. The reversal of 64872382465 is 56428327846.

It is not a de Polignac number, because 64872382465 - 2¹⁵ = 64872349697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255231 + ... + 441460.

It is an arithmetic number, because the mean of its divisors is an integer number (5310883116).

Almost surely, 2^64872382465 is an apocalyptic number.

It is an amenable number.

64872382465 is a deficient number, since it is larger than the sum of its proper divisors (20101747391).

64872382465 is a wasteful number, since it uses less digits than its factorization.

64872382465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698400.

The product of its digits is 15482880, while the sum is 55.

The spelling of 64872382465 in words is "sixty-four billion, eight hundred seventy-two million, three hundred eighty-two thousand, four hundred sixty-five".