42891687876 has 24 divisors (see below), whose sum is σ = 100084240480. Its totient is φ = 14296709952.

The previous prime is 42891687869. The next prime is 42891687887. The reversal of 42891687876 is 67878619824.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430320 + ... + 520536.

Almost surely, 2^42891687876 is an apocalyptic number.

It is an amenable number.

42891687876 is an abundant number, since it is smaller than the sum of its proper divisors (57192552604).

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

42891687876 is a wasteful number, since it uses less digits than its factorization.

42891687876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129843 (or 129841 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 42891687876 in words is "forty-two billion, eight hundred ninety-one million, six hundred eighty-seven thousand, eight hundred seventy-six".