86177538242 has 4 divisors (see below), whose sum is σ = 129266307366. Its totient is φ = 43088769120.

The previous prime is 86177538241. The next prime is 86177538277. The reversal of 86177538242 is 24283577168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77617402801 + 8560135441 = 278599^2 + 92521^2 .

It is not an unprimeable number, because it can be changed into a prime (86177538241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21544384559 + ... + 21544384562.

Almost surely, 2^86177538242 is an apocalyptic number.

86177538242 is a deficient number, since it is larger than the sum of its proper divisors (43088769124).

86177538242 is a wasteful number, since it uses less digits than its factorization.

86177538242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43088769123.

The product of its digits is 4515840, while the sum is 53.

The spelling of 86177538242 in words is "eighty-six billion, one hundred seventy-seven million, five hundred thirty-eight thousand, two hundred forty-two".