64331643662 has 32 divisors (see below), whose sum is σ = 115059740544. Its totient is φ = 26589420000.

The previous prime is 64331643647. The next prime is 64331643709. The reversal of 64331643662 is 26634613346.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1659464 + ... + 1697787.

It is an arithmetic number, because the mean of its divisors is an integer number (3595616892).

Almost surely, 2^64331643662 is an apocalyptic number.

64331643662 is a deficient number, since it is larger than the sum of its proper divisors (50728096882).

64331643662 is a wasteful number, since it uses less digits than its factorization.

64331643662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357344.

The product of its digits is 1119744, while the sum is 44.

The spelling of 64331643662 in words is "sixty-four billion, three hundred thirty-one million, six hundred forty-three thousand, six hundred sixty-two".