11587787940 has 48 divisors (see below), whose sum is σ = 32856526080. Its totient is φ = 3050960640.

The previous prime is 11587787927. The next prime is 11587787971. The reversal of 11587787940 is 4978778511.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1217601 + ... + 1227080.

It is an arithmetic number, because the mean of its divisors is an integer number (684510960).

Almost surely, 2^11587787940 is an apocalyptic number.

11587787940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11587787940 is an abundant number, since it is smaller than the sum of its proper divisors (21268738140).

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

11587787940 is a wasteful number, since it uses less digits than its factorization.

11587787940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444772 (or 2444770 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 57.

The spelling of 11587787940 in words is "eleven billion, five hundred eighty-seven million, seven hundred eighty-seven thousand, nine hundred forty".