83170121668 has 24 divisors (see below), whose sum is σ = 149174115552. Its totient is φ = 40552083264.

The previous prime is 83170121659. The next prime is 83170121731. The reversal of 83170121668 is 86612107138.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 285730 + ... + 497977.

It is an arithmetic number, because the mean of its divisors is an integer number (6215588148).

Almost surely, 2^83170121668 is an apocalyptic number.

It is an amenable number.

83170121668 is a deficient number, since it is larger than the sum of its proper divisors (66003993884).

83170121668 is a wasteful number, since it uses less digits than its factorization.

83170121668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784371 (or 784369 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 83170121668 in words is "eighty-three billion, one hundred seventy million, one hundred twenty-one thousand, six hundred sixty-eight".