11945545480 has 64 divisors (see below), whose sum is σ = 30864110400. Its totient is φ = 4115208960.

The previous prime is 11945545463. The next prime is 11945545483. The reversal of 11945545480 is 8454554911.

It is a self number, because there is not a number n which added to its sum of digits gives 11945545480.

It is not an unprimeable number, because it can be changed into a prime (11945545483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706087 + ... + 722806.

It is an arithmetic number, because the mean of its divisors is an integer number (482251725).

Almost surely, 2^11945545480 is an apocalyptic number.

11945545480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11945545480 is an abundant number, since it is smaller than the sum of its proper divisors (18918564920).

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

11945545480 is a wasteful number, since it uses less digits than its factorization.

11945545480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428934 (or 1428930 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 11945545480 in words is "eleven billion, nine hundred forty-five million, five hundred forty-five thousand, four hundred eighty".