187939596971 has 12 divisors (see below), whose sum is σ = 221618461032. Its totient is φ = 158884352928.

The previous prime is 187939596959. The next prime is 187939597019. The reversal of 187939596971 is 179695939781.

It is a de Polignac number, because none of the positive numbers 2^k-187939596971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187939596071) 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, 26266985 + ... + 26274138.

It is an arithmetic number, because the mean of its divisors is an integer number (18468205086).

Almost surely, 2^187939596971 is an apocalyptic number.

187939596971 is a deficient number, since it is larger than the sum of its proper divisors (33678864061).

187939596971 is an equidigital number, since it uses as much as digits as its factorization.

187939596971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52541210 (or 52541203 counting only the distinct ones).

The product of its digits is 231472080, while the sum is 74.

The spelling of 187939596971 in words is "one hundred eighty-seven billion, nine hundred thirty-nine million, five hundred ninety-six thousand, nine hundred seventy-one".