161112502 has 8 divisors (see below), whose sum is σ = 255884616. Its totient is φ = 75817632.

The previous prime is 161112491. The next prime is 161112503. The reversal of 161112502 is 205211161.

161112502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161112502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161112503) 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, 2369268 + ... + 2369335.

It is an arithmetic number, because the mean of its divisors is an integer number (31985577).

Almost surely, 2^161112502 is an apocalyptic number.

161112502 is a deficient number, since it is larger than the sum of its proper divisors (94772114).

161112502 is a wasteful number, since it uses less digits than its factorization.

161112502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738622.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 161112502 is about 12693.0099661191. The cubic root of 161112502 is about 544.1388662032.

Adding to 161112502 its reverse (205211161), we get a palindrome (366323663).

The spelling of 161112502 in words is "one hundred sixty-one million, one hundred twelve thousand, five hundred two".