11010111109978 has 16 divisors (see below), whose sum is σ = 16584789968640. Its totient is φ = 5481849238096.

The previous prime is 11010111109961. The next prime is 11010111109979. The reversal of 11010111109978 is 87990111101011.

It is a super-2 number, since 2×11010111109978² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11010111109978.

It is not an unprimeable number, because it can be changed into a prime (11010111109979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15565200 + ... + 16257172.

It is an arithmetic number, because the mean of its divisors is an integer number (1036549373040).

Almost surely, 2^{11010111109978} is an apocalyptic number.

11010111109978 is a deficient number, since it is larger than the sum of its proper divisors (5574678858662).

11010111109978 is a wasteful number, since it uses less digits than its factorization.

11010111109978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725501.

The product of its (nonzero) digits is 4536, while the sum is 40.

The spelling of 11010111109978 in words is "eleven trillion, ten billion, one hundred eleven million, one hundred nine thousand, nine hundred seventy-eight".