11389861406 has 36 divisors (see below), whose sum is σ = 21470167656. Its totient is φ = 4435896960.

The previous prime is 11389861361. The next prime is 11389861423. The reversal of 11389861406 is 60416898311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4391246 + ... + 4393838.

It is an arithmetic number, because the mean of its divisors is an integer number (596393546).

Almost surely, 2^11389861406 is an apocalyptic number.

11389861406 is a deficient number, since it is larger than the sum of its proper divisors (10080306250).

11389861406 is an frugal number, since it uses more digits than its factorization.

11389861406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217 (or 2613 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 11389861406 in words is "eleven billion, three hundred eighty-nine million, eight hundred sixty-one thousand, four hundred six".