15330055440 has 80 divisors (see below), whose sum is σ = 54312202368. Its totient is φ = 3504012288.

The previous prime is 15330055417. The next prime is 15330055457. The reversal of 15330055440 is 4455003351.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15330055398 and 15330055407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4560837 + ... + 4564196.

Almost surely, 2^15330055440 is an apocalyptic number.

15330055440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15330055440 is an abundant number, since it is smaller than the sum of its proper divisors (38982146928).

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

15330055440 is a wasteful number, since it uses less digits than its factorization.

15330055440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125056 (or 9125050 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 15330055440 its reverse (4455003351), we get a palindrome (19785058791).

The spelling of 15330055440 in words is "fifteen billion, three hundred thirty million, fifty-five thousand, four hundred forty".