16976171549 has 2 divisors, whose sum is σ = 16976171550. Its totient is φ = 16976171548.

The previous prime is 16976171501. The next prime is 16976171579. The reversal of 16976171549 is 94517167961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14514225625 + 2461945924 = 120475^2 + 49618^2 .

It is a cyclic number.

It is not a de Polignac number, because 16976171549 - 2²⁰ = 16975122973 is a prime.

It is a super-2 number, since 2×16976171549² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16976171494 and 16976171503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16976171579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8488085774 + 8488085775.

It is an arithmetic number, because the mean of its divisors is an integer number (8488085775).

Almost surely, 2^16976171549 is an apocalyptic number.

It is an amenable number.

16976171549 is a deficient number, since it is larger than the sum of its proper divisors (1).

16976171549 is an equidigital number, since it uses as much as digits as its factorization.

16976171549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 56.

The spelling of 16976171549 in words is "sixteen billion, nine hundred seventy-six million, one hundred seventy-one thousand, five hundred forty-nine".