11940530987 has 16 divisors (see below), whose sum is σ = 14939526912. Its totient is φ = 9271415520.

The previous prime is 11940530951. The next prime is 11940531007. The reversal of 11940530987 is 78903504911.

It is a cyclic number.

It is not a de Polignac number, because 11940530987 - 2⁶ = 11940530923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11940530947) 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, 252188 + ... + 295769.

It is an arithmetic number, because the mean of its divisors is an integer number (933720432).

Almost surely, 2^11940530987 is an apocalyptic number.

11940530987 is a deficient number, since it is larger than the sum of its proper divisors (2998995925).

11940530987 is a wasteful number, since it uses less digits than its factorization.

11940530987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548258.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 11940530987 in words is "eleven billion, nine hundred forty million, five hundred thirty thousand, nine hundred eighty-seven".