12120611516 has 48 divisors (see below), whose sum is σ = 24360628320. Its totient is φ = 5227130880.

The previous prime is 12120611473. The next prime is 12120611521. The reversal of 12120611516 is 61511602121.

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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73556 + ... + 172196.

It is an arithmetic number, because the mean of its divisors is an integer number (507513090).

Almost surely, 2^12120611516 is an apocalyptic number.

It is an amenable number.

12120611516 is an abundant number, since it is smaller than the sum of its proper divisors (12240016804).

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

12120611516 is a wasteful number, since it uses less digits than its factorization.

12120611516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98814 (or 98812 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 12120611516 in words is "twelve billion, one hundred twenty million, six hundred eleven thousand, five hundred sixteen".