666594189490 has 32 divisors (see below), whose sum is σ = 1263255678720. Its totient is φ = 252557092224.

The previous prime is 666594189463. The next prime is 666594189517. The reversal of 666594189490 is 94981495666.

It is an interprime number because it is at equal distance from previous prime (666594189463) and next prime (666594189517).

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, 705399 + ... + 1353061.

It is an arithmetic number, because the mean of its divisors is an integer number (39476739960).

Almost surely, 2^666594189490 is an apocalyptic number.

666594189490 is a deficient number, since it is larger than the sum of its proper divisors (596661489230).

666594189490 is a wasteful number, since it uses less digits than its factorization.

666594189490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653106.

The product of its (nonzero) digits is 100776960, while the sum is 67.

The spelling of 666594189490 in words is "six hundred sixty-six billion, five hundred ninety-four million, one hundred eighty-nine thousand, four hundred ninety".