158507373917 has 4 divisors (see below), whose sum is σ = 158508181440. Its totient is φ = 158506566396.

The previous prime is 158507373889. The next prime is 158507373931. The reversal of 158507373917 is 719373705851.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 719373705851 = 523 ⋅1375475537.

It is a cyclic number.

It is not a de Polignac number, because 158507373917 - 2²² = 158503179613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158507373317) 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, 101084 + ... + 572042.

It is an arithmetic number, because the mean of its divisors is an integer number (39627045360).

Almost surely, 2^158507373917 is an apocalyptic number.

It is an amenable number.

158507373917 is a deficient number, since it is larger than the sum of its proper divisors (807523).

158507373917 is an equidigital number, since it uses as much as digits as its factorization.

158507373917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807522.

The product of its (nonzero) digits is 5556600, while the sum is 56.

The spelling of 158507373917 in words is "one hundred fifty-eight billion, five hundred seven million, three hundred seventy-three thousand, nine hundred seventeen".