117660251906 has 16 divisors (see below), whose sum is σ = 177188209560. Its totient is φ = 58597969920.

The previous prime is 117660251873. The next prime is 117660251953. The reversal of 117660251906 is 609152066711.

It can be written as a sum of positive squares in 4 ways, for example, as 111205575625 + 6454676281 = 333475^2 + 80341^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406946 + ... + 633186.

Almost surely, 2^117660251906 is an apocalyptic number.

117660251906 is a deficient number, since it is larger than the sum of its proper divisors (59527957654).

117660251906 is a wasteful number, since it uses less digits than its factorization.

117660251906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227269.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 117660251906 in words is "one hundred seventeen billion, six hundred sixty million, two hundred fifty-one thousand, nine hundred six".