159987249251 has 8 divisors (see below), whose sum is σ = 162665917584. Its totient is φ = 157310385120.

The previous prime is 159987249221. The next prime is 159987249319. The reversal of 159987249251 is 152942789951.

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 159987249251 - 2¹⁸ = 159986987107 is a prime.

It is a super-2 number, since 2×159987249251² (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 (159987249221) 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 7 ways as a sum of consecutive naturals, for example, 271625 + ... + 627498.

It is an arithmetic number, because the mean of its divisors is an integer number (20333239698).

Almost surely, 2^159987249251 is an apocalyptic number.

159987249251 is a deficient number, since it is larger than the sum of its proper divisors (2678668333).

159987249251 is an equidigital number, since it uses as much as digits as its factorization.

159987249251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902101.

The product of its digits is 16329600, while the sum is 62.

The spelling of 159987249251 in words is "one hundred fifty-nine billion, nine hundred eighty-seven million, two hundred forty-nine thousand, two hundred fifty-one".