158997381245 has 4 divisors (see below), whose sum is σ = 190796857500. Its totient is φ = 127197904992.

The previous prime is 158997381173. The next prime is 158997381259. The reversal of 158997381245 is 542183799851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542183799851 = 1471 ⋅368581781.

It can be written as a sum of positive squares in 2 ways, for example, as 37994975929 + 121002405316 = 194923^2 + 347854^2 .

It is a cyclic number.

It is not a de Polignac number, because 158997381245 - 2¹⁸ = 158997119101 is a prime.

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, 15899738120 + ... + 15899738129.

It is an arithmetic number, because the mean of its divisors is an integer number (47699214375).

Almost surely, 2^158997381245 is an apocalyptic number.

It is an amenable number.

158997381245 is a deficient number, since it is larger than the sum of its proper divisors (31799476255).

158997381245 is an equidigital number, since it uses as much as digits as its factorization.

158997381245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31799476254.

The product of its digits is 21772800, while the sum is 62.

The spelling of 158997381245 in words is "one hundred fifty-eight billion, nine hundred ninety-seven million, three hundred eighty-one thousand, two hundred forty-five".