64436774353 has 16 divisors (see below), whose sum is σ = 75939102720. Its totient is φ = 53531534736.

The previous prime is 64436774323. The next prime is 64436774399. The reversal of 64436774353 is 35347763446.

It is a cyclic number.

It is not a de Polignac number, because 64436774353 - 2³³ = 55846839761 is a prime.

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 64436774353.

It is not an unprimeable number, because it can be changed into a prime (64436774323) 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, 916873 + ... + 984646.

It is an arithmetic number, because the mean of its divisors is an integer number (4746193920).

Almost surely, 2^64436774353 is an apocalyptic number.

It is an amenable number.

64436774353 is a deficient number, since it is larger than the sum of its proper divisors (11502328367).

64436774353 is a wasteful number, since it uses less digits than its factorization.

64436774353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901676.

The product of its digits is 15240960, while the sum is 52.

The spelling of 64436774353 in words is "sixty-four billion, four hundred thirty-six million, seven hundred seventy-four thousand, three hundred fifty-three".