64718195485 has 32 divisors (see below), whose sum is σ = 83538524160. Its totient is φ = 47987546688.

The previous prime is 64718195483. The next prime is 64718195491. The reversal of 64718195485 is 58459181746.

It is not a de Polignac number, because 64718195485 - 2¹ = 64718195483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64718195483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772312 + ... + 851998.

It is an arithmetic number, because the mean of its divisors is an integer number (2610578880).

Almost surely, 2^64718195485 is an apocalyptic number.

It is an amenable number.

64718195485 is a deficient number, since it is larger than the sum of its proper divisors (18820328675).

64718195485 is a wasteful number, since it uses less digits than its factorization.

64718195485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79897.

The product of its digits is 9676800, while the sum is 58.

The spelling of 64718195485 in words is "sixty-four billion, seven hundred eighteen million, one hundred ninety-five thousand, four hundred eighty-five".