2215660623312 has 80 divisors (see below), whose sum is σ = 5796604618560. Its totient is φ = 729194459136.

The previous prime is 2215660623301. The next prime is 2215660623353. The reversal of 2215660623312 is 2133260665122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1382998 + ... + 2518730.

It is an arithmetic number, because the mean of its divisors is an integer number (72457557732).

Almost surely, 2^{2215660623312} 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 2215660623312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2898302309280).

2215660623312 is an abundant number, since it is smaller than the sum of its proper divisors (3580943995248).

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

2215660623312 is a wasteful number, since it uses less digits than its factorization.

2215660623312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136260 (or 1136254 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 2215660623312 in words is "two trillion, two hundred fifteen billion, six hundred sixty million, six hundred twenty-three thousand, three hundred twelve".