1056665215674 has 24 divisors (see below), whose sum is σ = 2323612068960. Its totient is φ = 346964697288.

The previous prime is 1056665215651. The next prime is 1056665215687. The reversal of 1056665215674 is 4765125666501.

1056665215674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1056665215674² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056665215674.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438085534 + ... + 438087945.

It is an arithmetic number, because the mean of its divisors is an integer number (96817169540).

Almost surely, 2^{1056665215674} is an apocalyptic number.

1056665215674 is an abundant number, since it is smaller than the sum of its proper divisors (1266946853286).

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

1056665215674 is a wasteful number, since it uses less digits than its factorization.

1056665215674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876173554 (or 876173551 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 1056665215674 in words is "one trillion, fifty-six billion, six hundred sixty-five million, two hundred fifteen thousand, six hundred seventy-four".