158436742054677 has 4 divisors (see below), whose sum is σ = 211248989406240. Its totient is φ = 105624494703116.

The previous prime is 158436742054663. The next prime is 158436742054693. The reversal of 158436742054677 is 776450247634851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158436742054677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158436742054627) 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, 26406123675777 + ... + 26406123675782.

It is an arithmetic number, because the mean of its divisors is an integer number (52812247351560).

Almost surely, 2^{158436742054677} is an apocalyptic number.

It is an amenable number.

158436742054677 is a deficient number, since it is larger than the sum of its proper divisors (52812247351563).

158436742054677 is an equidigital number, since it uses as much as digits as its factorization.

158436742054677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52812247351562.

The product of its (nonzero) digits is 948326400, while the sum is 69.

The spelling of 158436742054677 in words is "one hundred fifty-eight trillion, four hundred thirty-six billion, seven hundred forty-two million, fifty-four thousand, six hundred seventy-seven".