1066335646941 has 24 divisors (see below), whose sum is σ = 1546845509664. Its totient is φ = 707853804000.

The previous prime is 1066335646927. The next prime is 1066335646949. The reversal of 1066335646941 is 1496465336601.

It is a happy number.

1066335646941 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 33 + 564 + 6 + 9 + 41 = 666.

It is not a de Polignac number, because 1066335646941 - 2¹¹ = 1066335644893 is a prime.

It is a super-2 number, since 2×1066335646941² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066335646949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7968910 + ... + 8101616.

It is an arithmetic number, because the mean of its divisors is an integer number (64451896236).

Almost surely, 2^{1066335646941} is an apocalyptic number.

It is an amenable number.

1066335646941 is a deficient number, since it is larger than the sum of its proper divisors (480509862723).

1066335646941 is a wasteful number, since it uses less digits than its factorization.

1066335646941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136521 (or 136518 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 1066335646941 in words is "one trillion, sixty-six billion, three hundred thirty-five million, six hundred forty-six thousand, nine hundred forty-one".