64931213946 has 8 divisors (see below), whose sum is σ = 129862427904. Its totient is φ = 21643737980.

The previous prime is 64931213929. The next prime is 64931213993.

64931213946 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

64931213946 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 64931213895 and 64931213904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5410934490 + ... + 5410934501.

It is an arithmetic number, because the mean of its divisors is an integer number (16232803488).

Almost surely, 2^64931213946 is an apocalyptic number.

64931213946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64931213946 is a wasteful number, since it uses less digits than its factorization.

64931213946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10821868996.

The product of its digits is 839808, while the sum is 48.

The spelling of 64931213946 in words is "sixty-four billion, nine hundred thirty-one million, two hundred thirteen thousand, nine hundred forty-six".