168280401387 has 16 divisors (see below), whose sum is σ = 260773505280. Its totient is φ = 94530394272.

The previous prime is 168280401371. The next prime is 168280401433. The reversal of 168280401387 is 783104082861.

It is not a de Polignac number, because 168280401387 - 2⁴ = 168280401371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168280401307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67908528 + ... + 67911005.

It is an arithmetic number, because the mean of its divisors is an integer number (16298344080).

Almost surely, 2^168280401387 is an apocalyptic number.

168280401387 is a deficient number, since it is larger than the sum of its proper divisors (92493103893).

168280401387 is a wasteful number, since it uses less digits than its factorization.

168280401387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135819602.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 168280401387 in words is "one hundred sixty-eight billion, two hundred eighty million, four hundred one thousand, three hundred eighty-seven".