11381378276 has 12 divisors (see below), whose sum is σ = 20000058540. Its totient is φ = 5667075840.

The previous prime is 11381378209. The next prime is 11381378279. The reversal of 11381378276 is 67287318311.

It can be written as a sum of positive squares in 2 ways, for example, as 10192921600 + 1188456676 = 100960^2 + 34474^2 .

It is a super-2 number, since 2×11381378276² (a number of 21 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 11381378276.

It is not an unprimeable number, because it can be changed into a prime (11381378279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5902241 + ... + 5904168.

It is an arithmetic number, because the mean of its divisors is an integer number (1666671545).

Almost surely, 2^11381378276 is an apocalyptic number.

It is an amenable number.

11381378276 is a deficient number, since it is larger than the sum of its proper divisors (8618680264).

11381378276 is a wasteful number, since it uses less digits than its factorization.

11381378276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11806654 (or 11806652 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The spelling of 11381378276 in words is "eleven billion, three hundred eighty-one million, three hundred seventy-eight thousand, two hundred seventy-six".