11731220891662 has 8 divisors (see below), whose sum is σ = 17621036059536. Its totient is φ = 5857542205152.

The previous prime is 11731220891653. The next prime is 11731220891683. The reversal of 11731220891662 is 26619802213711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11731220891662² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4034118523 + ... + 4034121430.

It is an arithmetic number, because the mean of its divisors is an integer number (2202629507442).

Almost surely, 2^{11731220891662} is an apocalyptic number.

11731220891662 is a deficient number, since it is larger than the sum of its proper divisors (5889815167874).

11731220891662 is an equidigital number, since it uses as much as digits as its factorization.

11731220891662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068240682.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 11731220891662 in words is "eleven trillion, seven hundred thirty-one billion, two hundred twenty million, eight hundred ninety-one thousand, six hundred sixty-two".