15120043040 has 24 divisors (see below), whose sum is σ = 35721102060. Its totient is φ = 6048017152.

The previous prime is 15120043009. The next prime is 15120043067. The reversal of 15120043040 is 4034002151.

It can be written as a sum of positive squares in 2 ways, for example, as 15057253264 + 62789776 = 122708^2 + 7924^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47249975 + ... + 47250294.

Almost surely, 2^15120043040 is an apocalyptic number.

15120043040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15120043040 is an abundant number, since it is smaller than the sum of its proper divisors (20601059020).

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

15120043040 is an equidigital number, since it uses as much as digits as its factorization.

15120043040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94500284 (or 94500276 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 15120043040 its reverse (4034002151), we get a palindrome (19154045191).

The spelling of 15120043040 in words is "fifteen billion, one hundred twenty million, forty-three thousand, forty".