11280999516 has 24 divisors (see below), whose sum is σ = 26406437904. Its totient is φ = 3748318080.

The previous prime is 11280999493. The next prime is 11280999517. The reversal of 11280999516 is 61599908211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280999517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1497975 + ... + 1505486.

It is an arithmetic number, because the mean of its divisors is an integer number (1100268246).

Almost surely, 2^11280999516 is an apocalyptic number.

It is an amenable number.

11280999516 is an abundant number, since it is smaller than the sum of its proper divisors (15125438388).

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

11280999516 is a wasteful number, since it uses less digits than its factorization.

11280999516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003781 (or 3003779 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 51.

The spelling of 11280999516 in words is "eleven billion, two hundred eighty million, nine hundred ninety-nine thousand, five hundred sixteen".