64331813346 has 16 divisors (see below), whose sum is σ = 132141022464. Its totient is φ = 20864371824.

The previous prime is 64331813317. The next prime is 64331813353.

64331813346 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64331813298 and 64331813307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144891250 + ... + 144891693.

It is an arithmetic number, because the mean of its divisors is an integer number (8258813904).

Almost surely, 2^64331813346 is an apocalyptic number.

64331813346 is an abundant number, since it is smaller than the sum of its proper divisors (67809209118).

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

64331813346 is a wasteful number, since it uses less digits than its factorization.

64331813346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289782985.

The product of its digits is 373248, while the sum is 42.

The spelling of 64331813346 in words is "sixty-four billion, three hundred thirty-one million, eight hundred thirteen thousand, three hundred forty-six".