42109431151718 has 32 divisors (see below), whose sum is σ = 73002904603200. Its totient is φ = 17843095378944.

The previous prime is 42109431151679. The next prime is 42109431151727. The reversal of 42109431151718 is 81715113490124.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20825096 + ... + 22757492.

It is an arithmetic number, because the mean of its divisors is an integer number (2281340768850).

Almost surely, 2^{42109431151718} is an apocalyptic number.

42109431151718 is a deficient number, since it is larger than the sum of its proper divisors (30893473451482).

42109431151718 is a wasteful number, since it uses less digits than its factorization.

42109431151718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949984.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 42109431151718 in words is "forty-two trillion, one hundred nine billion, four hundred thirty-one million, one hundred fifty-one thousand, seven hundred eighteen".