117721708742 has 16 divisors (see below), whose sum is σ = 192660429312. Its totient is φ = 53502949320.

The previous prime is 117721708739. The next prime is 117721708759. The reversal of 117721708742 is 247807127711.

It is a congruent 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, 169898 + ... + 514109.

It is an arithmetic number, because the mean of its divisors is an integer number (12041276832).

Almost surely, 2^117721708742 is an apocalyptic number.

117721708742 is a deficient number, since it is larger than the sum of its proper divisors (74938720570).

117721708742 is a wasteful number, since it uses less digits than its factorization.

117721708742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691843.

The product of its (nonzero) digits is 307328, while the sum is 47.

The spelling of 117721708742 in words is "one hundred seventeen billion, seven hundred twenty-one million, seven hundred eight thousand, seven hundred forty-two".