158172054055 has 4 divisors (see below), whose sum is σ = 189806464872. Its totient is φ = 126537643240.

The previous prime is 158172053999. The next prime is 158172054121. The reversal of 158172054055 is 550450271851.

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

It is a de Polignac number, because none of the positive numbers 2^k-158172054055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15817205401 + ... + 15817205410.

It is an arithmetic number, because the mean of its divisors is an integer number (47451616218).

Almost surely, 2^158172054055 is an apocalyptic number.

158172054055 is a deficient number, since it is larger than the sum of its proper divisors (31634410817).

158172054055 is an equidigital number, since it uses as much as digits as its factorization.

158172054055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31634410816.

The product of its (nonzero) digits is 280000, while the sum is 43.

The spelling of 158172054055 in words is "one hundred fifty-eight billion, one hundred seventy-two million, fifty-four thousand, fifty-five".