11100001109978 has 8 divisors (see below), whose sum is σ = 18163638180000. Its totient is φ = 5045455049980.

The previous prime is 11100001109917. The next prime is 11100001109983. The reversal of 11100001109978 is 87990110000111.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252272752478 + ... + 252272752521.

It is an arithmetic number, because the mean of its divisors is an integer number (2270454772500).

Almost surely, 2^{11100001109978} is an apocalyptic number.

11100001109978 is a deficient number, since it is larger than the sum of its proper divisors (7063637070022).

11100001109978 is a wasteful number, since it uses less digits than its factorization.

11100001109978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504545505012.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 11100001109978 in words is "eleven trillion, one hundred billion, one million, one hundred nine thousand, nine hundred seventy-eight".