15540451430 has 24 divisors (see below), whose sum is σ = 32539803408. Its totient is φ = 5328154608.

The previous prime is 15540451391. The next prime is 15540451453. The reversal of 15540451430 is 3415404551.

15540451430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15857114 + ... + 15858093.

It is an arithmetic number, because the mean of its divisors is an integer number (1355825142).

Almost surely, 2^15540451430 is an apocalyptic number.

15540451430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15540451430 is an abundant number, since it is smaller than the sum of its proper divisors (16999351978).

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

15540451430 is a wasteful number, since it uses less digits than its factorization.

15540451430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31715228 (or 31715221 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 15540451430 its reverse (3415404551), we get a palindrome (18955855981).

The spelling of 15540451430 in words is "fifteen billion, five hundred forty million, four hundred fifty-one thousand, four hundred thirty".