11106780813 has 12 divisors (see below), whose sum is σ = 16434424188. Its totient is φ = 7223922240.

The previous prime is 11106780793. The next prime is 11106780821. The reversal of 11106780813 is 31808760111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6655622724 + 4451158089 = 81582^2 + 66717^2 .

It is not a de Polignac number, because 11106780813 - 2²⁴ = 11090003597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11106788813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15049470 + ... + 15050207.

It is an arithmetic number, because the mean of its divisors is an integer number (1369535349).

Almost surely, 2^11106780813 is an apocalyptic number.

It is an amenable number.

11106780813 is a deficient number, since it is larger than the sum of its proper divisors (5327643375).

11106780813 is a wasteful number, since it uses less digits than its factorization.

11106780813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30099724 (or 30099721 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 11106780813 in words is "eleven billion, one hundred six million, seven hundred eighty thousand, eight hundred thirteen".