17990547277 has 8 divisors (see below), whose sum is σ = 18354673152. Its totient is φ = 17629233600.

The previous prime is 17990547251. The next prime is 17990547283. The reversal of 17990547277 is 77274509971.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17990547277 is a prime.

It is a super-2 number, since 2×17990547277² (a number of 21 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 (17990547577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690124 + ... + 715717.

It is an arithmetic number, because the mean of its divisors is an integer number (2294334144).

Almost surely, 2^17990547277 is an apocalyptic number.

It is an amenable number.

17990547277 is a deficient number, since it is larger than the sum of its proper divisors (364125875).

17990547277 is a wasteful number, since it uses less digits than its factorization.

17990547277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406099.

The product of its (nonzero) digits is 7779240, while the sum is 58.

The spelling of 17990547277 in words is "seventeen billion, nine hundred ninety million, five hundred forty-seven thousand, two hundred seventy-seven".