168516750916 has 6 divisors (see below), whose sum is σ = 294904314110. Its totient is φ = 84258375456.

The previous prime is 168516750877. The next prime is 168516750959. The reversal of 168516750916 is 619057615861.

It can be written as a sum of positive squares in only one way, i.e., 100333096516 + 68183654400 = 316754^2 + 261120^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21064593861 + ... + 21064593868.

Almost surely, 2^168516750916 is an apocalyptic number.

It is an amenable number.

168516750916 is a deficient number, since it is larger than the sum of its proper divisors (126387563194).

168516750916 is a wasteful number, since it uses less digits than its factorization.

168516750916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42129187733 (or 42129187731 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 168516750916 in words is "one hundred sixty-eight billion, five hundred sixteen million, seven hundred fifty thousand, nine hundred sixteen".