1466993139669 has 16 divisors (see below), whose sum is σ = 2173373428800. Its totient is φ = 977972809968.

The previous prime is 1466993139653. The next prime is 1466993139691. The reversal of 1466993139669 is 9669313996641.

1466993139669 is a `hidden beast` number, since 1 + 4 + 66 + 99 + 31 + 396 + 69 = 666.

It is not a de Polignac number, because 1466993139669 - 2⁴ = 1466993139653 is a prime.

It is a super-2 number, since 2×1466993139669² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1466993139597 and 1466993139606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1466993139569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604947 + ... + 1816575.

It is an arithmetic number, because the mean of its divisors is an integer number (135835839300).

Almost surely, 2^{1466993139669} is an apocalyptic number.

It is an amenable number.

1466993139669 is a deficient number, since it is larger than the sum of its proper divisors (706380289131).

1466993139669 is a wasteful number, since it uses less digits than its factorization.

1466993139669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256481 (or 1256475 counting only the distinct ones).

The product of its digits is 306110016, while the sum is 72.

The spelling of 1466993139669 in words is "one trillion, four hundred sixty-six billion, nine hundred ninety-three million, one hundred thirty-nine thousand, six hundred sixty-nine".