158082329921 has 2 divisors, whose sum is σ = 158082329922. Its totient is φ = 158082329920.

The previous prime is 158082329893. The next prime is 158082329927. The reversal of 158082329921 is 129923280851.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148792261696 + 9290068225 = 385736^2 + 96385^2 .

It is a cyclic number.

It is not a de Polignac number, because 158082329921 - 2³⁴ = 140902460737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158082329921.

It is not a weakly prime, because it can be changed into another prime (158082329927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79041164960 + 79041164961.

It is an arithmetic number, because the mean of its divisors is an integer number (79041164961).

Almost surely, 2^158082329921 is an apocalyptic number.

It is an amenable number.

158082329921 is a deficient number, since it is larger than the sum of its proper divisors (1).

158082329921 is an equidigital number, since it uses as much as digits as its factorization.

158082329921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 158082329921 in words is "one hundred fifty-eight billion, eighty-two million, three hundred twenty-nine thousand, nine hundred twenty-one".