64356665346 has 32 divisors (see below), whose sum is σ = 143502952320. Its totient is φ = 21379000752.

The previous prime is 64356665333. The next prime is 64356665377.

It is a happy number.

64356665346 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 64356665292 and 64356665301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017950 + ... + 2049593.

It is an arithmetic number, because the mean of its divisors is an integer number (4484467260).

Almost surely, 2^64356665346 is an apocalyptic number.

64356665346 is an abundant number, since it is smaller than the sum of its proper divisors (79146286974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64356665346 is a wasteful number, since it uses less digits than its factorization.

64356665346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067847 (or 4067841 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 54.

The spelling of 64356665346 in words is "sixty-four billion, three hundred fifty-six million, six hundred sixty-five thousand, three hundred forty-six".