64994473611 has 12 divisors (see below), whose sum is σ = 98822006920. Its totient is φ = 41049141120.

The previous prime is 64994473603. The next prime is 64994473637. The reversal of 64994473611 is 11637449946.

It is not a de Polignac number, because 64994473611 - 2³ = 64994473603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64994473651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190042150 + ... + 190042491.

Almost surely, 2^64994473611 is an apocalyptic number.

64994473611 is a deficient number, since it is larger than the sum of its proper divisors (33827533309).

64994473611 is a wasteful number, since it uses less digits than its factorization.

64994473611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380084666 (or 380084663 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 64994473611 in words is "sixty-four billion, nine hundred ninety-four million, four hundred seventy-three thousand, six hundred eleven".