12405591690 has 16 divisors (see below), whose sum is σ = 29773420128. Its totient is φ = 3308157776.

The previous prime is 12405591683. The next prime is 12405591721. The reversal of 12405591690 is 9619550421.

It is a super-2 number, since 2×12405591690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206759832 + ... + 206759891.

It is an arithmetic number, because the mean of its divisors is an integer number (1860838758).

Almost surely, 2^12405591690 is an apocalyptic number.

12405591690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12405591690 is an abundant number, since it is smaller than the sum of its proper divisors (17367828438).

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

12405591690 is a wasteful number, since it uses less digits than its factorization.

12405591690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413519733.

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 12405591690 in words is "twelve billion, four hundred five million, five hundred ninety-one thousand, six hundred ninety".