1115693781378 has 32 divisors (see below), whose sum is σ = 2434278839040. Its totient is φ = 338083766160.

The previous prime is 1115693781341. The next prime is 1115693781379. The reversal of 1115693781378 is 8731873965111.

It is a super-2 number, since 2×1115693781378² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1115693781379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7317801 + ... + 7468707.

It is an arithmetic number, because the mean of its divisors is an integer number (76071213720).

Almost surely, 2^{1115693781378} is an apocalyptic number.

1115693781378 is an abundant number, since it is smaller than the sum of its proper divisors (1318585057662).

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

1115693781378 is a wasteful number, since it uses less digits than its factorization.

1115693781378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262942.

The product of its digits is 7620480, while the sum is 60.

The spelling of 1115693781378 in words is "one trillion, one hundred fifteen billion, six hundred ninety-three million, seven hundred eighty-one thousand, three hundred seventy-eight".