120851886738 has 128 divisors (see below), whose sum is σ = 281570826240. Its totient is φ = 34174622720.

The previous prime is 120851886737. The next prime is 120851886763. The reversal of 120851886738 is 837688158021.

It is not an unprimeable number, because it can be changed into a prime (120851886737) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 79350445 + ... + 79351967.

It is an arithmetic number, because the mean of its divisors is an integer number (2199772080).

Almost surely, 2^120851886738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120851886738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140785413120).

120851886738 is an abundant number, since it is smaller than the sum of its proper divisors (160718939502).

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

120851886738 is a wasteful number, since it uses less digits than its factorization.

120851886738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 5160960, while the sum is 57.

The spelling of 120851886738 in words is "one hundred twenty billion, eight hundred fifty-one million, eight hundred eighty-six thousand, seven hundred thirty-eight".