15444054040 has 16 divisors (see below), whose sum is σ = 34749121680. Its totient is φ = 6177621600.

The previous prime is 15444054037. The next prime is 15444054049. The reversal of 15444054040 is 4045044451.

It is a junction number, because it is equal to n+sod(n) for n = 15444053993 and 15444054011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15444054049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193050636 + ... + 193050715.

It is an arithmetic number, because the mean of its divisors is an integer number (2171820105).

Almost surely, 2^15444054040 is an apocalyptic number.

15444054040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15444054040 is an abundant number, since it is smaller than the sum of its proper divisors (19305067640).

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

15444054040 is a wasteful number, since it uses less digits than its factorization.

15444054040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386101362 (or 386101358 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 15444054040 its reverse (4045044451), we get a palindrome (19489098491).

The spelling of 15444054040 in words is "fifteen billion, four hundred forty-four million, fifty-four thousand, forty".