158473058221 has 4 divisors (see below), whose sum is σ = 158790640000. Its totient is φ = 158155476444.

The previous prime is 158473058197. The next prime is 158473058239. The reversal of 158473058221 is 122850374851.

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.

It is a cyclic number.

It is not a de Polignac number, because 158473058221 - 2²³ = 158464669613 is a prime.

It is a super-2 number, since 2×158473058221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158473058021) 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, 158790141 + ... + 158791138.

It is an arithmetic number, because the mean of its divisors is an integer number (39697660000).

Almost surely, 2^158473058221 is an apocalyptic number.

It is an amenable number.

158473058221 is a deficient number, since it is larger than the sum of its proper divisors (317581779).

158473058221 is an equidigital number, since it uses as much as digits as its factorization.

158473058221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317581778.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 158473058221 in words is "one hundred fifty-eight billion, four hundred seventy-three million, fifty-eight thousand, two hundred twenty-one".