12732531690 has 16 divisors (see below), whose sum is σ = 30558076128. Its totient is φ = 3395341776.

The previous prime is 12732531683. The next prime is 12732531719. The reversal of 12732531690 is 9613523721.

It is a happy number.

It is a super-2 number, since 2×12732531690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 212208832 + ... + 212208891.

It is an arithmetic number, because the mean of its divisors is an integer number (1909879758).

Almost surely, 2^12732531690 is an apocalyptic number.

12732531690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12732531690 is an abundant number, since it is smaller than the sum of its proper divisors (17825544438).

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

12732531690 is a wasteful number, since it uses less digits than its factorization.

12732531690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424417733.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 12732531690 in words is "twelve billion, seven hundred thirty-two million, five hundred thirty-one thousand, six hundred ninety".