161287276627837 has 32 divisors (see below), whose sum is σ = 175668700769280. Its totient is φ = 147497487667200.

The previous prime is 161287276627823. The next prime is 161287276627847. The reversal of 161287276627837 is 738726672782161.

It is a cyclic number.

It is not a de Polignac number, because 161287276627837 - 2²⁷ = 161287142410109 is a prime.

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 161287276627837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161287276627847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200962693 + ... + 201763669.

It is an arithmetic number, because the mean of its divisors is an integer number (5489646899040).

Almost surely, 2^{161287276627837} is an apocalyptic number.

161287276627837 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

161287276627837 is a deficient number, since it is larger than the sum of its proper divisors (14381424141443).

161287276627837 is a wasteful number, since it uses less digits than its factorization.

161287276627837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802861.

The product of its digits is 796594176, while the sum is 73.

The spelling of 161287276627837 in words is "one hundred sixty-one trillion, two hundred eighty-seven billion, two hundred seventy-six million, six hundred twenty-seven thousand, eight hundred thirty-seven".