42381443177994 has 32 divisors (see below), whose sum is σ = 89252264724480. Its totient is φ = 13379387561712.

The previous prime is 42381443177921. The next prime is 42381443178017. The reversal of 42381443177994 is 49977134418324.

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, 58332844 + ... + 59054919.

It is an arithmetic number, because the mean of its divisors is an integer number (2789133272640).

Almost surely, 2^{42381443177994} is an apocalyptic number.

42381443177994 is an abundant number, since it is smaller than the sum of its proper divisors (46870821546486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42381443177994 is a wasteful number, since it uses less digits than its factorization.

42381443177994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117390954.

The product of its digits is 146313216, while the sum is 66.

The spelling of 42381443177994 in words is "forty-two trillion, three hundred eighty-one billion, four hundred forty-three million, one hundred seventy-seven thousand, nine hundred ninety-four".