2111115813378 has 64 divisors (see below), whose sum is σ = 4972879481472. Its totient is φ = 589034350080.

The previous prime is 2111115813371. The next prime is 2111115813407. The reversal of 2111115813378 is 8733185111112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2111115813371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2758251 + ... + 3439502.

It is an arithmetic number, because the mean of its divisors is an integer number (77701241898).

Almost surely, 2^{2111115813378} is an apocalyptic number.

2111115813378 is an abundant number, since it is smaller than the sum of its proper divisors (2861763668094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111115813378 is a wasteful number, since it uses less digits than its factorization.

2111115813378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6198179.

The product of its digits is 40320, while the sum is 42.

The spelling of 2111115813378 in words is "two trillion, one hundred eleven billion, one hundred fifteen million, eight hundred thirteen thousand, three hundred seventy-eight".