83170121669 has 4 divisors (see below), whose sum is σ = 83171568480. Its totient is φ = 83168674860.

The previous prime is 83170121659. The next prime is 83170121731. The reversal of 83170121669 is 96612107138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83170121669 - 2²⁰ = 83169073093 is a prime.

It is a super-2 number, since 2×83170121669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83170121659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633449 + ... + 753390.

It is an arithmetic number, because the mean of its divisors is an integer number (20792892120).

Almost surely, 2^83170121669 is an apocalyptic number.

It is an amenable number.

83170121669 is a deficient number, since it is larger than the sum of its proper divisors (1446811).

83170121669 is a wasteful number, since it uses less digits than its factorization.

83170121669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446810.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 83170121669 in words is "eighty-three billion, one hundred seventy million, one hundred twenty-one thousand, six hundred sixty-nine".