86915879541 has 12 divisors (see below), whose sum is σ = 128607236940. Its totient is φ = 56530653120.

The previous prime is 86915879527. The next prime is 86915879543. The reversal of 86915879541 is 14597851968.

86915879541 is a `hidden beast` number, since 8 + 6 + 9 + 1 + 5 + 87 + 9 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27267586641 + 59648292900 = 165129^2 + 244230^2 .

It is not a de Polignac number, because 86915879541 - 2¹⁹ = 86915355253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86915879543) 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, 117771826 + ... + 117772563.

It is an arithmetic number, because the mean of its divisors is an integer number (10717269745).

Almost surely, 2^86915879541 is an apocalyptic number.

It is an amenable number.

86915879541 is a deficient number, since it is larger than the sum of its proper divisors (41691357399).

86915879541 is a wasteful number, since it uses less digits than its factorization.

86915879541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235544436 (or 235544433 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 63.

The spelling of 86915879541 in words is "eighty-six billion, nine hundred fifteen million, eight hundred seventy-nine thousand, five hundred forty-one".