1056665217004 has 48 divisors (see below), whose sum is σ = 1888050124800. Its totient is φ = 517340918016.

The previous prime is 1056665216989. The next prime is 1056665217053. The reversal of 1056665217004 is 4007125666501.

It is a super-2 number, since 2×1056665217004² (a number of 25 digits) contains 22 as substring.

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, 42901437 + ... + 42926059.

It is an arithmetic number, because the mean of its divisors is an integer number (39334377600).

Almost surely, 2^{1056665217004} is an apocalyptic number.

It is an amenable number.

1056665217004 is a deficient number, since it is larger than the sum of its proper divisors (831384907796).

1056665217004 is a wasteful number, since it uses less digits than its factorization.

1056665217004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25822 (or 25820 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 1056665217004 in words is "one trillion, fifty-six billion, six hundred sixty-five million, two hundred seventeen thousand, four".