3111216979620 has 192 divisors, whose sum is σ = 8935321973760. Its totient is φ = 808598189568.

The previous prime is 3111216979613. The next prime is 3111216979681. The reversal of 3111216979620 is 269796121113.

It is a self number, because there is not a number n which added to its sum of digits gives 3111216979620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 259543267 + ... + 259555253.

It is an arithmetic number, because the mean of its divisors is an integer number (46538135280).

Almost surely, 2^{3111216979620} is an apocalyptic number.

3111216979620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3111216979620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4467660986880).

3111216979620 is an abundant number, since it is smaller than the sum of its proper divisors (5824104994140).

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

3111216979620 is a wasteful number, since it uses less digits than its factorization.

3111216979620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12682 (or 12680 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The spelling of 3111216979620 in words is "three trillion, one hundred eleven billion, two hundred sixteen million, nine hundred seventy-nine thousand, six hundred twenty".