1111444778115 has 192 divisors, whose sum is σ = 2560626432000. Its totient is φ = 433334956032.

The previous prime is 1111444778111. The next prime is 1111444778173. The reversal of 1111444778115 is 5118774441111.

1111444778115 is a `hidden beast` number, since 1 + 1 + 114 + 447 + 7 + 81 + 15 = 666.

It is not a de Polignac number, because 1111444778115 - 2² = 1111444778111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1111444778111) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 2102661 + ... + 2577609.

It is an arithmetic number, because the mean of its divisors is an integer number (13336596000).

Almost surely, 2^{1111444778115} is an apocalyptic number.

1111444778115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1111444778115 is an abundant number, since it is smaller than the sum of its proper divisors (1449181653885).

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

1111444778115 is a wasteful number, since it uses less digits than its factorization.

1111444778115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475026 (or 475023 counting only the distinct ones).

The product of its digits is 125440, while the sum is 45.

The spelling of 1111444778115 in words is "one trillion, one hundred eleven billion, four hundred forty-four million, seven hundred seventy-eight thousand, one hundred fifteen".