11661353192690 has 16 divisors (see below), whose sum is σ = 21143650608792. Its totient is φ = 4630493529984.

The previous prime is 11661353192651. The next prime is 11661353192719. The reversal of 11661353192690 is 9629135316611.

11661353192690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6894148200241 + 4767204992449 = 2625671^2 + 2183393^2 .

It is a super-2 number, since 2×11661353192690² (a number of 27 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, 4255966949 + ... + 4255969688.

Almost surely, 2^{11661353192690} is an apocalyptic number.

11661353192690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11661353192690 is a deficient number, since it is larger than the sum of its proper divisors (9482297416102).

11661353192690 is a wasteful number, since it uses less digits than its factorization.

11661353192690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511936781.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The spelling of 11661353192690 in words is "eleven trillion, six hundred sixty-one billion, three hundred fifty-three million, one hundred ninety-two thousand, six hundred ninety".