2173266978899 has 16 divisors (see below), whose sum is σ = 2218797504000. Its totient is φ = 2128155120000.

The previous prime is 2173266978889. The next prime is 2173266978907. The reversal of 2173266978899 is 9988796623712.

It is a cyclic number.

It is not a de Polignac number, because 2173266978899 - 2¹² = 2173266974803 is a prime.

It is a super-2 number, since 2×2173266978899² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173266978829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112893227 + ... + 112912475.

It is an arithmetic number, because the mean of its divisors is an integer number (138674844000).

Almost surely, 2^{2173266978899} is an apocalyptic number.

2173266978899 is a deficient number, since it is larger than the sum of its proper divisors (45530525101).

2173266978899 is a wasteful number, since it uses less digits than its factorization.

2173266978899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30002.

The product of its digits is 987614208, while the sum is 77.

The spelling of 2173266978899 in words is "two trillion, one hundred seventy-three billion, two hundred sixty-six million, nine hundred seventy-eight thousand, eight hundred ninety-nine".