42971809199 has 12 divisors (see below), whose sum is σ = 47251399440. Its totient is φ = 39050457600.

The previous prime is 42971809189. The next prime is 42971809261. The reversal of 42971809199 is 99190817924.

It is a de Polignac number, because none of the positive numbers 2^k-42971809199 is a prime.

It is a super-2 number, since 2×42971809199² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42971809189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259334 + ... + 391404.

It is an arithmetic number, because the mean of its divisors is an integer number (3937616620).

Almost surely, 2^42971809199 is an apocalyptic number.

42971809199 is a deficient number, since it is larger than the sum of its proper divisors (4279590241).

42971809199 is a wasteful number, since it uses less digits than its factorization.

42971809199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134782 (or 134771 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 42971809199 in words is "forty-two billion, nine hundred seventy-one million, eight hundred nine thousand, one hundred ninety-nine".