158786772727291 has 4 divisors (see below), whose sum is σ = 168127171123032. Its totient is φ = 149446374331552.

The previous prime is 158786772727241. The next prime is 158786772727307. The reversal of 158786772727291 is 192727277687851.

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

It is a cyclic number.

It is not a de Polignac number, because 158786772727291 - 2³³ = 158778182792699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158786772727211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4670199197845 + ... + 4670199197878.

It is an arithmetic number, because the mean of its divisors is an integer number (42031792780758).

Almost surely, 2^{158786772727291} is an apocalyptic number.

158786772727291 is a deficient number, since it is larger than the sum of its proper divisors (9340398395741).

158786772727291 is an equidigital number, since it uses as much as digits as its factorization.

158786772727291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9340398395740.

The product of its digits is 2323399680, while the sum is 79.

The spelling of 158786772727291 in words is "one hundred fifty-eight trillion, seven hundred eighty-six billion, seven hundred seventy-two million, seven hundred twenty-seven thousand, two hundred ninety-one".