11390865983 has 16 divisors (see below), whose sum is σ = 13251348480. Its totient is φ = 9589971456.

The previous prime is 11390865979. The next prime is 11390866013. The reversal of 11390865983 is 38956809311.

It is a Cunningham number, because it is equal to 106728²-1.

It is a cyclic number.

It is not a de Polignac number, because 11390865983 - 2² = 11390865979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390865973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53366 + ... + 160092.

It is an arithmetic number, because the mean of its divisors is an integer number (828209280).

Almost surely, 2^11390865983 is an apocalyptic number.

11390865983 is a deficient number, since it is larger than the sum of its proper divisors (1860482497).

11390865983 is a wasteful number, since it uses less digits than its factorization.

11390865983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107006.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 11390865983 in words is "eleven billion, three hundred ninety million, eight hundred sixty-five thousand, nine hundred eighty-three".