158240745281 has 8 divisors (see below), whose sum is σ = 158705313984. Its totient is φ = 157776772720.

The previous prime is 158240745277. The next prime is 158240745283. The reversal of 158240745281 is 182547042851.

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

It is a cyclic number.

It is not a de Polignac number, because 158240745281 - 2² = 158240745277 is a prime.

It is a super-2 number, since 2×158240745281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158240745283) 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, 385430 + ... + 681936.

It is an arithmetic number, because the mean of its divisors is an integer number (19838164248).

Almost surely, 2^158240745281 is an apocalyptic number.

It is an amenable number.

158240745281 is a deficient number, since it is larger than the sum of its proper divisors (464568703).

158240745281 is a wasteful number, since it uses less digits than its factorization.

158240745281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298071.

The product of its (nonzero) digits is 716800, while the sum is 47.

The spelling of 158240745281 in words is "one hundred fifty-eight billion, two hundred forty million, seven hundred forty-five thousand, two hundred eighty-one".