64931013946 has 8 divisors (see below), whose sum is σ = 97758590580. Its totient is φ = 32344817088.

The previous prime is 64931013941. The next prime is 64931013967.

64931013946 is nontrivially palindromic in base 10.

64931013946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 64815558921 + 115455025 = 254589^2 + 10745^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 64931013896 and 64931013905.

It is not an unprimeable number, because it can be changed into a prime (64931013941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60344271 + ... + 60345346.

Almost surely, 2^64931013946 is an apocalyptic number.

64931013946 is a deficient number, since it is larger than the sum of its proper divisors (32827576634).

64931013946 is a wasteful number, since it uses less digits than its factorization.

64931013946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120689888.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 64931013946 in words is "sixty-four billion, nine hundred thirty-one million, thirteen thousand, nine hundred forty-six".