11803427540 has 48 divisors (see below), whose sum is σ = 25515462672. Its totient is φ = 4584493056.

The previous prime is 11803427521. The next prime is 11803427561. The reversal of 11803427540 is 4572430811.

It can be written as a sum of positive squares in 8 ways, for example, as 682881424 + 11120546116 = 26132^2 + 105454^2 .

It is a super-3 number, since 3×11803427540³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11803427540.

It is a congruent number.

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, 45422 + ... + 160218.

It is an arithmetic number, because the mean of its divisors is an integer number (531572139).

Almost surely, 2^11803427540 is an apocalyptic number.

11803427540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11803427540 is an abundant number, since it is smaller than the sum of its proper divisors (13712035132).

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

11803427540 is a wasteful number, since it uses less digits than its factorization.

11803427540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114956 (or 114954 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 11803427540 in words is "eleven billion, eight hundred three million, four hundred twenty-seven thousand, five hundred forty".