158221049679 has 64 divisors (see below), whose sum is σ = 304947118080. Its totient is φ = 78619131360.

The previous prime is 158221049677. The next prime is 158221049683. The reversal of 158221049679 is 976940122851.

It is a happy number.

158221049679 is a `hidden beast` number, since 1 + 5 + 82 + 2 + 1 + 0 + 496 + 79 = 666.

It is not a de Polignac number, because 158221049679 - 2¹ = 158221049677 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158221049677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1606627 + ... + 1702260.

It is an arithmetic number, because the mean of its divisors is an integer number (4764798720).

Almost surely, 2^158221049679 is an apocalyptic number.

158221049679 is a deficient number, since it is larger than the sum of its proper divisors (146726068401).

158221049679 is a wasteful number, since it uses less digits than its factorization.

158221049679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308937 (or 3308931 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 158221049679 in words is "one hundred fifty-eight billion, two hundred twenty-one million, forty-nine thousand, six hundred seventy-nine".