11851544940 has 48 divisors (see below), whose sum is σ = 33276821760. Its totient is φ = 3151602880.

The previous prime is 11851544897. The next prime is 11851544953. The reversal of 11851544940 is 4944515811.

It is a junction number, because it is equal to n+sod(n) for n = 11851544892 and 11851544901.

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, 253566 + ... + 296645.

It is an arithmetic number, because the mean of its divisors is an integer number (693267120).

Almost surely, 2^11851544940 is an apocalyptic number.

11851544940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11851544940 is an abundant number, since it is smaller than the sum of its proper divisors (21425276820).

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

11851544940 is a wasteful number, since it uses less digits than its factorization.

11851544940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550582 (or 550580 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 11851544940 in words is "eleven billion, eight hundred fifty-one million, five hundred forty-four thousand, nine hundred forty".