117990261999 has 12 divisors (see below), whose sum is σ = 180455695056. Its totient is φ = 74033105472.

The previous prime is 117990261989. The next prime is 117990262001. The reversal of 117990261999 is 999162099711.

117990261999 is a `hidden beast` number, since 1 + 1 + 7 + 9 + 9 + 0 + 2 + 619 + 9 + 9 = 666.

It is not a de Polignac number, because 117990261999 - 2⁷ = 117990261871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117990261919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385588939 + ... + 385589244.

It is an arithmetic number, because the mean of its divisors is an integer number (15037974588).

Almost surely, 2^117990261999 is an apocalyptic number.

117990261999 is a deficient number, since it is larger than the sum of its proper divisors (62465433057).

117990261999 is a wasteful number, since it uses less digits than its factorization.

117990261999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771178206 (or 771178203 counting only the distinct ones).

The product of its (nonzero) digits is 4960116, while the sum is 63.

The spelling of 117990261999 in words is "one hundred seventeen billion, nine hundred ninety million, two hundred sixty-one thousand, nine hundred ninety-nine".