64320323402 has 32 divisors (see below), whose sum is σ = 99952925184. Its totient is φ = 31010414400.

The previous prime is 64320323399. The next prime is 64320323447. The reversal of 64320323402 is 20432302346.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25965788 + ... + 25968264.

It is an arithmetic number, because the mean of its divisors is an integer number (3123528912).

Almost surely, 2^64320323402 is an apocalyptic number.

64320323402 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

64320323402 is a deficient number, since it is larger than the sum of its proper divisors (35632601782).

64320323402 is a wasteful number, since it uses less digits than its factorization.

64320323402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 64320323402 its reverse (20432302346), we get a palindrome (84752625748).

The spelling of 64320323402 in words is "sixty-four billion, three hundred twenty million, three hundred twenty-three thousand, four hundred two".