120611860864 has 256 divisors, whose sum is σ = 277603200000. Its totient is φ = 51709132800.

The previous prime is 120611860861. The next prime is 120611860867. The reversal of 120611860864 is 468068116021.

It is an interprime number because it is at equal distance from previous prime (120611860861) and next prime (120611860867).

It is a self number, because there is not a number n which added to its sum of digits gives 120611860864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120611860861) 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, 241706887 + ... + 241707385.

It is an arithmetic number, because the mean of its divisors is an integer number (1084387500).

Almost surely, 2^120611860864 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 120611860864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138801600000).

120611860864 is an abundant number, since it is smaller than the sum of its proper divisors (156991339136).

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

120611860864 is a wasteful number, since it uses less digits than its factorization.

120611860864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

Adding to 120611860864 its reverse (468068116021), we get a palindrome (588679976885).

The spelling of 120611860864 in words is "one hundred twenty billion, six hundred eleven million, eight hundred sixty thousand, eight hundred sixty-four".