158948289921 has 8 divisors (see below), whose sum is σ = 218767538944. Its totient is φ = 102547283760.

The previous prime is 158948289901. The next prime is 158948289947. The reversal of 158948289921 is 129982849851.

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

It is not a de Polignac number, because 158948289921 - 2⁷ = 158948289793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158948289901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854560606 + ... + 854560791.

It is an arithmetic number, because the mean of its divisors is an integer number (27345942368).

Almost surely, 2^158948289921 is an apocalyptic number.

It is an amenable number.

158948289921 is a deficient number, since it is larger than the sum of its proper divisors (59819249023).

158948289921 is a wasteful number, since it uses less digits than its factorization.

158948289921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709121431.

The product of its digits is 29859840, while the sum is 66.

The spelling of 158948289921 in words is "one hundred fifty-eight billion, nine hundred forty-eight million, two hundred eighty-nine thousand, nine hundred twenty-one".