158221852616 has 16 divisors (see below), whose sum is σ = 303901729740. Its totient is φ = 77181391360.

The previous prime is 158221852597. The next prime is 158221852717. The reversal of 158221852616 is 616258122851.

It can be written as a sum of positive squares in 2 ways, for example, as 157474048900 + 747803716 = 396830^2 + 27346^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241191521 + ... + 241192176.

Almost surely, 2^158221852616 is an apocalyptic number.

It is an amenable number.

158221852616 is a deficient number, since it is larger than the sum of its proper divisors (145679877124).

158221852616 is a wasteful number, since it uses less digits than its factorization.

158221852616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482383744 (or 482383740 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The spelling of 158221852616 in words is "one hundred fifty-eight billion, two hundred twenty-one million, eight hundred fifty-two thousand, six hundred sixteen".