11887434460 has 72 divisors (see below), whose sum is σ = 27904751280. Its totient is φ = 4249386240.

The previous prime is 11887434421. The next prime is 11887434491. The reversal of 11887434460 is 6443478811.

It is a super-2 number, since 2×11887434460² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11887434460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101152 + ... + 184408.

It is an arithmetic number, because the mean of its divisors is an integer number (387565990).

Almost surely, 2^11887434460 is an apocalyptic number.

11887434460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11887434460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13952375640).

11887434460 is an abundant number, since it is smaller than the sum of its proper divisors (16017316820).

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

11887434460 is a wasteful number, since it uses less digits than its factorization.

11887434460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83347 (or 83334 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 11887434460 in words is "eleven billion, eight hundred eighty-seven million, four hundred thirty-four thousand, four hundred sixty".