651161112 has 64 divisors (see below), whose sum is σ = 1866481920. Its totient is φ = 185443968.

The previous prime is 651161087. The next prime is 651161143. The reversal of 651161112 is 211161156.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47143 + ... + 59369.

It is an arithmetic number, because the mean of its divisors is an integer number (29163780).

Almost surely, 2^651161112 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 651161112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933240960).

651161112 is an abundant number, since it is smaller than the sum of its proper divisors (1215320808).

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

651161112 is a wasteful number, since it uses less digits than its factorization.

651161112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560 (or 12556 counting only the distinct ones).

The product of its digits is 360, while the sum is 24.

The square root of 651161112 is about 25517.8586875937. The cubic root of 651161112 is about 866.7545937090.

The spelling of 651161112 in words is "six hundred fifty-one million, one hundred sixty-one thousand, one hundred twelve".