1066617953247 has 192 divisors, whose sum is σ = 1922115829760. Its totient is φ = 513441815040.

The previous prime is 1066617953243. The next prime is 1066617953249. The reversal of 1066617953247 is 7423597166601.

It is not a de Polignac number, because 1066617953247 - 2² = 1066617953243 is a prime.

It is a super-2 number, since 2×1066617953247² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066617953243) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 447593418 + ... + 447595800.

Almost surely, 2^{1066617953247} is an apocalyptic number.

1066617953247 is a deficient number, since it is larger than the sum of its proper divisors (855497876513).

1066617953247 is a wasteful number, since it uses less digits than its factorization.

1066617953247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 1066617953247 in words is "one trillion, sixty-six billion, six hundred seventeen million, nine hundred fifty-three thousand, two hundred forty-seven".