159722162749 has 4 divisors (see below), whose sum is σ = 159724291936. Its totient is φ = 159720033564.

The previous prime is 159722162741. The next prime is 159722162753. The reversal of 159722162749 is 947261227951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159722162749 - 2³ = 159722162741 is a prime.

It is a super-2 number, since 2×159722162749² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159722162749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159722162741) 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, 947799 + ... + 1103524.

It is an arithmetic number, because the mean of its divisors is an integer number (39931072984).

Almost surely, 2^159722162749 is an apocalyptic number.

It is an amenable number.

159722162749 is a deficient number, since it is larger than the sum of its proper divisors (2129187).

159722162749 is an equidigital number, since it uses as much as digits as its factorization.

159722162749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129186.

The product of its digits is 3810240, while the sum is 55.

The spelling of 159722162749 in words is "one hundred fifty-nine billion, seven hundred twenty-two million, one hundred sixty-two thousand, seven hundred forty-nine".