158432981306 has 8 divisors (see below), whose sum is σ = 237876023700. Its totient is φ = 79140973408.

The previous prime is 158432981281. The next prime is 158432981309. The reversal of 158432981306 is 603189234851.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 157814713081 + 618268225 = 397259^2 + 24865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×158432981306³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (158432981309) 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, 37756001 + ... + 37760196.

Almost surely, 2^158432981306 is an apocalyptic number.

158432981306 is a deficient number, since it is larger than the sum of its proper divisors (79443042394).

158432981306 is a wasteful number, since it uses less digits than its factorization.

158432981306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75517248.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 158432981306 in words is "one hundred fifty-eight billion, four hundred thirty-two million, nine hundred eighty-one thousand, three hundred six".