11386530778 has 16 divisors (see below), whose sum is σ = 19550139840. Its totient is φ = 4872348576.

The previous prime is 11386530737. The next prime is 11386530803. The reversal of 11386530778 is 87703568311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623443 + ... + 641446.

It is an arithmetic number, because the mean of its divisors is an integer number (1221883740).

Almost surely, 2^11386530778 is an apocalyptic number.

11386530778 is a deficient number, since it is larger than the sum of its proper divisors (8163609062).

11386530778 is a wasteful number, since it uses less digits than its factorization.

11386530778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265541.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 11386530778 in words is "eleven billion, three hundred eighty-six million, five hundred thirty thousand, seven hundred seventy-eight".