1166965423590 has 32 divisors (see below), whose sum is σ = 2800778512896. Its totient is φ = 311183946720.

The previous prime is 1166965423579. The next prime is 1166965423601. The reversal of 1166965423590 is 953245696611.

It is an interprime number because it is at equal distance from previous prime (1166965423579) and next prime (1166965423601).

It is a self number, because there is not a number n which added to its sum of digits gives 1166965423590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045209 + ... + 1851051.

It is an arithmetic number, because the mean of its divisors is an integer number (87524328528).

Almost surely, 2^{1166965423590} is an apocalyptic number.

1166965423590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166965423590 is an abundant number, since it is smaller than the sum of its proper divisors (1633813089306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166965423590 is a wasteful number, since it uses less digits than its factorization.

1166965423590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854124.

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 1166965423590 in words is "one trillion, one hundred sixty-six billion, nine hundred sixty-five million, four hundred twenty-three thousand, five hundred ninety".