64118455 has 16 divisors (see below), whose sum is σ = 78843744. Its totient is φ = 50042880.

The previous prime is 64118437. The next prime is 64118459. The reversal of 64118455 is 55481146.

It is not a de Polignac number, because 64118455 - 2²¹ = 62021303 is a prime.

It is a super-2 number, since 2×64118455² = 8222352543174050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64118455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64118459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34500 + ... + 36310.

It is an arithmetic number, because the mean of its divisors is an integer number (4927734).

Almost surely, 2^64118455 is an apocalyptic number.

64118455 is a deficient number, since it is larger than the sum of its proper divisors (14725289).

64118455 is a wasteful number, since it uses less digits than its factorization.

64118455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986.

The product of its digits is 19200, while the sum is 34.

The square root of 64118455 is about 8007.4000149861. The cubic root of 64118455 is about 400.2466291539.

The spelling of 64118455 in words is "sixty-four million, one hundred eighteen thousand, four hundred fifty-five".