15540412000 has 48 divisors (see below), whose sum is σ = 38182802112. Its totient is φ = 6216163200.

The previous prime is 15540411979. The next prime is 15540412009. The reversal of 15540412000 is 21404551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15540412009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938552 + ... + 1946551.

It is an arithmetic number, because the mean of its divisors is an integer number (795475044).

Almost surely, 2^15540412000 is an apocalyptic number.

15540412000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15540412000 is an abundant number, since it is smaller than the sum of its proper divisors (22642390112).

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

15540412000 is an equidigital number, since it uses as much as digits as its factorization.

15540412000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885128 (or 3885110 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 15540412000 its reverse (21404551), we get a palindrome (15561816551).

The spelling of 15540412000 in words is "fifteen billion, five hundred forty million, four hundred twelve thousand".