2520244311666 has 16 divisors (see below), whose sum is σ = 5040536104800. Its totient is φ = 840073523648.

The previous prime is 2520244311649. The next prime is 2520244311667. The reversal of 2520244311666 is 6661134420252.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2520244311667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268796 + ... + 2578823.

It is an arithmetic number, because the mean of its divisors is an integer number (315033506550).

Almost surely, 2^{2520244311666} is an apocalyptic number.

2520244311666 is an abundant number, since it is smaller than the sum of its proper divisors (2520291793134).

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

2520244311666 is a wasteful number, since it uses less digits than its factorization.

2520244311666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956793.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 2520244311666 in words is "two trillion, five hundred twenty billion, two hundred forty-four million, three hundred eleven thousand, six hundred sixty-six".