65338921646 has 8 divisors (see below), whose sum is σ = 98780102400. Its totient is φ = 32412220848.

The previous prime is 65338921639. The next prime is 65338921657. The reversal of 65338921646 is 64612983356.

65338921646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 128619671 + ... + 128620178.

It is an arithmetic number, because the mean of its divisors is an integer number (12347512800).

Almost surely, 2^65338921646 is an apocalyptic number.

65338921646 is a deficient number, since it is larger than the sum of its proper divisors (33441180754).

65338921646 is a wasteful number, since it uses less digits than its factorization.

65338921646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257239978.

The product of its digits is 5598720, while the sum is 53.

The spelling of 65338921646 in words is "sixty-five billion, three hundred thirty-eight million, nine hundred twenty-one thousand, six hundred forty-six".