3491123974520 has 512 divisors, whose sum is σ = 10442979993600. Its totient is φ = 1019468685312.

The previous prime is 3491123974517. The next prime is 3491123974537. The reversal of 3491123974520 is 254793211943.

3491123974520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1180628882 + ... + 1180631838.

It is an arithmetic number, because the mean of its divisors is an integer number (20396445300).

Almost surely, 2^{3491123974520} 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 3491123974520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5221489996800).

3491123974520 is an abundant number, since it is smaller than the sum of its proper divisors (6951856019080).

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

3491123974520 is a wasteful number, since it uses less digits than its factorization.

3491123974520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447 (or 3443 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 3491123974520 in words is "three trillion, four hundred ninety-one billion, one hundred twenty-three million, nine hundred seventy-four thousand, five hundred twenty".