168019953902 has 16 divisors (see below), whose sum is σ = 258873414912. Its totient is φ = 81759029880.

The previous prime is 168019953887. The next prime is 168019953919. The reversal of 168019953902 is 209359910861.

It is a happy number.

168019953902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7542374 + ... + 7564617.

It is an arithmetic number, because the mean of its divisors is an integer number (16179588432).

Almost surely, 2^168019953902 is an apocalyptic number.

168019953902 is a deficient number, since it is larger than the sum of its proper divisors (90853461010).

168019953902 is a wasteful number, since it uses less digits than its factorization.

168019953902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15107143.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 168019953902 in words is "one hundred sixty-eight billion, nineteen million, nine hundred fifty-three thousand, nine hundred two".