11111111109892 has 6 divisors (see below), whose sum is σ = 19444444442318. Its totient is φ = 5555555554944.

The previous prime is 11111111109881. The next prime is 11111111109911. The reversal of 11111111109892 is 29890111111111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5942790830656 + 5168320279236 = 2437784^2 + 2273394^2 .

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 as a sum of consecutive naturals, namely, 1388888888733 + ... + 1388888888740.

Almost surely, 2^{11111111109892} is an apocalyptic number.

It is an amenable number.

11111111109892 is a deficient number, since it is larger than the sum of its proper divisors (8333333332426).

11111111109892 is a wasteful number, since it uses less digits than its factorization.

11111111109892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777777777477 (or 2777777777475 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 37.

The spelling of 11111111109892 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred nine thousand, eight hundred ninety-two".