64642446244 has 12 divisors (see below), whose sum is σ = 113126065024. Its totient is φ = 32320713384.

The previous prime is 64642446233. The next prime is 64642446287. The reversal of 64642446244 is 44264424646.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64642446194 and 64642446203.

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, 406009 + ... + 542335.

Almost surely, 2^64642446244 is an apocalyptic number.

It is an amenable number.

64642446244 is a deficient number, since it is larger than the sum of its proper divisors (48483618780).

64642446244 is a wasteful number, since it uses less digits than its factorization.

64642446244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254874 (or 254872 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 46.

The spelling of 64642446244 in words is "sixty-four billion, six hundred forty-two million, four hundred forty-six thousand, two hundred forty-four".