158664842326 has 4 divisors (see below), whose sum is σ = 237997263492. Its totient is φ = 79332421162.

The previous prime is 158664842321. The next prime is 158664842353. The reversal of 158664842326 is 623248466851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 623248466851 = 587 ⋅1061752073.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158664842321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39666210580 + ... + 39666210583.

It is an arithmetic number, because the mean of its divisors is an integer number (59499315873).

Almost surely, 2^158664842326 is an apocalyptic number.

158664842326 is a deficient number, since it is larger than the sum of its proper divisors (79332421166).

158664842326 is an equidigital number, since it uses as much as digits as its factorization.

158664842326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79332421165.

The product of its digits is 13271040, while the sum is 55.

The spelling of 158664842326 in words is "one hundred fifty-eight billion, six hundred sixty-four million, eight hundred forty-two thousand, three hundred twenty-six".