64500053091 has 8 divisors (see below), whose sum is σ = 86001749184. Its totient is φ = 42999196200.

The previous prime is 64500053077. The next prime is 64500053099. The reversal of 64500053091 is 19035000546.

It is a happy number.

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

It is not a de Polignac number, because 64500053091 - 2⁷ = 64500052963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64500053099) 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, 685 + ... + 359166.

It is an arithmetic number, because the mean of its divisors is an integer number (10750218648).

Almost surely, 2^64500053091 is an apocalyptic number.

64500053091 is a deficient number, since it is larger than the sum of its proper divisors (21501696093).

64500053091 is a wasteful number, since it uses less digits than its factorization.

64500053091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419601.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 64500053091 in words is "sixty-four billion, five hundred million, fifty-three thousand, ninety-one".