108187379642 has 32 divisors (see below), whose sum is σ = 172643529600. Its totient is φ = 50763888448.

The previous prime is 108187379623. The next prime is 108187379693. The reversal of 108187379642 is 246973781801.

It is a super-2 number, since 2×108187379642² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 164459 + ... + 493377.

It is an arithmetic number, because the mean of its divisors is an integer number (5395110300).

Almost surely, 2^108187379642 is an apocalyptic number.

It is a pronic number, being equal to 328918×328919.

108187379642 is a deficient number, since it is larger than the sum of its proper divisors (64456149958).

108187379642 is a wasteful number, since it uses less digits than its factorization.

108187379642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329110.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 108187379642 in words is "one hundred eight billion, one hundred eighty-seven million, three hundred seventy-nine thousand, six hundred forty-two".