158478231873 has 24 divisors (see below), whose sum is σ = 229554339168. Its totient is φ = 97207299072.

The previous prime is 158478231841. The next prime is 158478231881. The reversal of 158478231873 is 378132874851.

It is not a de Polignac number, because 158478231873 - 2⁵ = 158478231841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158478231803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353440 + ... + 664737.

It is an arithmetic number, because the mean of its divisors is an integer number (9564764132).

Almost surely, 2^158478231873 is an apocalyptic number.

158478231873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

158478231873 is a deficient number, since it is larger than the sum of its proper divisors (71076107295).

158478231873 is a wasteful number, since it uses less digits than its factorization.

158478231873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018513 (or 1018500 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 57.

The spelling of 158478231873 in words is "one hundred fifty-eight billion, four hundred seventy-eight million, two hundred thirty-one thousand, eight hundred seventy-three".