12158996690 has 32 divisors (see below), whose sum is σ = 22845079296. Its totient is φ = 4650648640.

The previous prime is 12158996617. The next prime is 12158996741. The reversal of 12158996690 is 9669985121.

12158996690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12158996690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944195 + ... + 956985.

It is an arithmetic number, because the mean of its divisors is an integer number (713908728).

Almost surely, 2^12158996690 is an apocalyptic number.

12158996690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12158996690 is a deficient number, since it is larger than the sum of its proper divisors (10686082606).

12158996690 is a wasteful number, since it uses less digits than its factorization.

12158996690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16954.

The product of its (nonzero) digits is 2099520, while the sum is 56.

The spelling of 12158996690 in words is "twelve billion, one hundred fifty-eight million, nine hundred ninety-six thousand, six hundred ninety".