86771897157 has 24 divisors (see below), whose sum is σ = 127204936768. Its totient is φ = 52574512320.

The previous prime is 86771897141. The next prime is 86771897161. The reversal of 86771897157 is 75179817768.

It is not a de Polignac number, because 86771897157 - 2⁴ = 86771897141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86771897197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1365393 + ... + 1427529.

Almost surely, 2^86771897157 is an apocalyptic number.

It is an amenable number.

86771897157 is a deficient number, since it is larger than the sum of its proper divisors (40433039611).

86771897157 is a wasteful number, since it uses less digits than its factorization.

86771897157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66009 (or 65998 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 66.

The spelling of 86771897157 in words is "eighty-six billion, seven hundred seventy-one million, eight hundred ninety-seven thousand, one hundred fifty-seven".