1166640084477 has 48 divisors (see below), whose sum is σ = 1929086065920. Its totient is φ = 665543402496.

The previous prime is 1166640084473. The next prime is 1166640084481. The reversal of 1166640084477 is 7744800466611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1166640084473) and next prime (1166640084481).

It is not a de Polignac number, because 1166640084477 - 2² = 1166640084473 is a prime.

It is a super-2 number, since 2×1166640084477² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166640084473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101538349 + ... + 101549837.

It is an arithmetic number, because the mean of its divisors is an integer number (40189293040).

Almost surely, 2^{1166640084477} is an apocalyptic number.

It is an amenable number.

1166640084477 is a deficient number, since it is larger than the sum of its proper divisors (762445981443).

1166640084477 is a wasteful number, since it uses less digits than its factorization.

1166640084477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14042 (or 14039 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 1166640084477 in words is "one trillion, one hundred sixty-six billion, six hundred forty million, eighty-four thousand, four hundred seventy-seven".