17649399087 has 6 divisors (see below), whose sum is σ = 25493576472. Its totient is φ = 11766266052.

The previous prime is 17649399073. The next prime is 17649399113. The reversal of 17649399087 is 78099394671.

It is not a de Polignac number, because 17649399087 - 2²⁴ = 17632621871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17649399007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 980522163 + ... + 980522180.

It is an arithmetic number, because the mean of its divisors is an integer number (4248929412).

Almost surely, 2^17649399087 is an apocalyptic number.

17649399087 is a deficient number, since it is larger than the sum of its proper divisors (7844177385).

17649399087 is a wasteful number, since it uses less digits than its factorization.

17649399087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961044349 (or 1961044346 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 17649399087 in words is "seventeen billion, six hundred forty-nine million, three hundred ninety-nine thousand, eighty-seven".