161127512 has 64 divisors (see below), whose sum is σ = 388039680. Its totient is φ = 60964992.

The previous prime is 161127497. The next prime is 161127521. The reversal of 161127512 is 215721161.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11933 + ... + 21555.

It is an arithmetic number, because the mean of its divisors is an integer number (6063120).

Almost surely, 2^161127512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161127512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194019840).

161127512 is an abundant number, since it is smaller than the sum of its proper divisors (226912168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161127512 is a wasteful number, since it uses less digits than its factorization.

161127512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9672 (or 9668 counting only the distinct ones).

The product of its digits is 840, while the sum is 26.

The square root of 161127512 is about 12693.6012226633. The cubic root of 161127512 is about 544.1557638589.

Adding to 161127512 its reverse (215721161), we get a palindrome (376848673).

The spelling of 161127512 in words is "one hundred sixty-one million, one hundred twenty-seven thousand, five hundred twelve".