16626487572173 has 2 divisors, whose sum is σ = 16626487572174. Its totient is φ = 16626487572172.

The previous prime is 16626487572151. The next prime is 16626487572203. The reversal of 16626487572173 is 37127578462661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10426098728809 + 6200388843364 = 3228947^2 + 2490058^2 .

It is a cyclic number.

It is not a de Polignac number, because 16626487572173 - 2³⁶ = 16557768095437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16626487572103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8313243786086 + 8313243786087.

It is an arithmetic number, because the mean of its divisors is an integer number (8313243786087).

Almost surely, 2^{16626487572173} is an apocalyptic number.

It is an amenable number.

16626487572173 is a deficient number, since it is larger than the sum of its proper divisors (1).

16626487572173 is an equidigital number, since it uses as much as digits as its factorization.

16626487572173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142248960, while the sum is 65.

The spelling of 16626487572173 in words is "sixteen trillion, six hundred twenty-six billion, four hundred eighty-seven million, five hundred seventy-two thousand, one hundred seventy-three".