11778907345 has 16 divisors (see below), whose sum is σ = 14284434960. Its totient is φ = 9323424000.

The previous prime is 11778907333. The next prime is 11778907363. The reversal of 11778907345 is 54370987711.

It can be written as a sum of positive squares in 8 ways, for example, as 731215681 + 11047691664 = 27041^2 + 105108^2 .

It is not a de Polignac number, because 11778907345 - 2¹⁵ = 11778874577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11778907292 and 11778907301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811411 + ... + 825799.

It is an arithmetic number, because the mean of its divisors is an integer number (892777185).

Almost surely, 2^11778907345 is an apocalyptic number.

It is an amenable number.

11778907345 is a deficient number, since it is larger than the sum of its proper divisors (2505527615).

11778907345 is a wasteful number, since it uses less digits than its factorization.

11778907345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16116.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The spelling of 11778907345 in words is "eleven billion, seven hundred seventy-eight million, nine hundred seven thousand, three hundred forty-five".