11394985720 has 16 divisors (see below), whose sum is σ = 25638717960. Its totient is φ = 4557994272.

The previous prime is 11394985697. The next prime is 11394985751. The reversal of 11394985720 is 2758949311.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142437282 + ... + 142437361.

Almost surely, 2^11394985720 is an apocalyptic number.

11394985720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11394985720 is an abundant number, since it is smaller than the sum of its proper divisors (14243732240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11394985720 is a wasteful number, since it uses less digits than its factorization.

11394985720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284874654 (or 284874650 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 11394985720 in words is "eleven billion, three hundred ninety-four million, nine hundred eighty-five thousand, seven hundred twenty".