11801542380 has 48 divisors (see below), whose sum is σ = 33217357824. Its totient is φ = 3130598080.

The previous prime is 11801542349. The next prime is 11801542387. The reversal of 11801542380 is 8324510811.

It is not an unprimeable number, because it can be changed into a prime (11801542387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503442 + ... + 526361.

It is an arithmetic number, because the mean of its divisors is an integer number (692028288).

Almost surely, 2^11801542380 is an apocalyptic number.

11801542380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11801542380 is an abundant number, since it is smaller than the sum of its proper divisors (21415815444).

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

11801542380 is a wasteful number, since it uses less digits than its factorization.

11801542380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030006 (or 1030004 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 11801542380 in words is "eleven billion, eight hundred one million, five hundred forty-two thousand, three hundred eighty".