15540001024 has 36 divisors (see below), whose sum is σ = 31393068336. Its totient is φ = 7676375552.

The previous prime is 15540000989. The next prime is 15540001093. The reversal of 15540001024 is 42010004551.

It is a junction number, because it is equal to n+sod(n) for n = 15540000986 and 15540001004.

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, 344434 + ... + 386929.

It is an arithmetic number, because the mean of its divisors is an integer number (872029676).

Almost surely, 2^15540001024 is an apocalyptic number.

It is an amenable number.

15540001024 is an abundant number, since it is smaller than the sum of its proper divisors (15853067312).

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

15540001024 is an frugal number, since it uses more digits than its factorization.

15540001024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731462 (or 731448 counting only the distinct ones).

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

Adding to 15540001024 its reverse (42010004551), we get a palindrome (57550005575).

The spelling of 15540001024 in words is "fifteen billion, five hundred forty million, one thousand, twenty-four".