1065666102531 has 32 divisors (see below), whose sum is σ = 1457467038720. Its totient is φ = 692237145600.

The previous prime is 1065666102503. The next prime is 1065666102541. The reversal of 1065666102531 is 1352016665601.

It is not a de Polignac number, because 1065666102531 - 2⁵ = 1065666102499 is a prime.

It is a super-2 number, since 2×1065666102531² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065666102541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94209366 + ... + 94220676.

It is an arithmetic number, because the mean of its divisors is an integer number (45545844960).

Almost surely, 2^{1065666102531} is an apocalyptic number.

1065666102531 is a deficient number, since it is larger than the sum of its proper divisors (391800936189).

1065666102531 is a wasteful number, since it uses less digits than its factorization.

1065666102531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13067.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 1065666102531 in words is "one trillion, sixty-five billion, six hundred sixty-six million, one hundred two thousand, five hundred thirty-one".