11390916861 has 96 divisors (see below), whose sum is σ = 18431981568. Its totient is φ = 6746664960.

The previous prime is 11390916847. The next prime is 11390916871. The reversal of 11390916861 is 16861909311.

It is a de Polignac number, because none of the positive numbers 2^k-11390916861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390916871) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 57821815 + ... + 57822011.

It is an arithmetic number, because the mean of its divisors is an integer number (191999808).

Almost surely, 2^11390916861 is an apocalyptic number.

It is an amenable number.

11390916861 is a deficient number, since it is larger than the sum of its proper divisors (7041064707).

11390916861 is a wasteful number, since it uses less digits than its factorization.

11390916861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 11390916861 in words is "eleven billion, three hundred ninety million, nine hundred sixteen thousand, eight hundred sixty-one".