11710986638 has 16 divisors (see below), whose sum is σ = 18920828976. Its totient is φ = 5404190400.

The previous prime is 11710986619. The next prime is 11710986647. The reversal of 11710986638 is 83668901711.

It is a congruent number.

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, 142538 + ... + 209138.

It is an arithmetic number, because the mean of its divisors is an integer number (1182551811).

Almost surely, 2^11710986638 is an apocalyptic number.

11710986638 is a deficient number, since it is larger than the sum of its proper divisors (7209842338).

11710986638 is a wasteful number, since it uses less digits than its factorization.

11710986638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73379.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 11710986638 in words is "eleven billion, seven hundred ten million, nine hundred eighty-six thousand, six hundred thirty-eight".