83668880668 has 24 divisors (see below), whose sum is σ = 147803543552. Its totient is φ = 41440324464.

The previous prime is 83668880657. The next prime is 83668880741. The reversal of 83668880668 is 86608886638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198571 + ... + 454717.

Almost surely, 2^83668880668 is an apocalyptic number.

It is an amenable number.

83668880668 is a deficient number, since it is larger than the sum of its proper divisors (64134662884).

83668880668 is a wasteful number, since it uses less digits than its factorization.

83668880668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256921 (or 256919 counting only the distinct ones).

The product of its (nonzero) digits is 127401984, while the sum is 67.

The spelling of 83668880668 in words is "eighty-three billion, six hundred sixty-eight million, eight hundred eighty thousand, six hundred sixty-eight".