15540404130 has 96 divisors (see below), whose sum is σ = 40904922240. Its totient is φ = 4093056000.

The previous prime is 15540404119. The next prime is 15540404161. The reversal of 15540404130 is 3140404551.

It is a happy number.

15540404130 is a `hidden beast` number, since 1 + 554 + 0 + 40 + 41 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15540404094 and 15540404103.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3882130 + ... + 3886130.

It is an arithmetic number, because the mean of its divisors is an integer number (426092940).

Almost surely, 2^15540404130 is an apocalyptic number.

15540404130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15540404130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20452461120).

15540404130 is an abundant number, since it is smaller than the sum of its proper divisors (25364518110).

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

15540404130 is a wasteful number, since it uses less digits than its factorization.

15540404130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 15540404130 its reverse (3140404551), we get a palindrome (18680808681).

The spelling of 15540404130 in words is "fifteen billion, five hundred forty million, four hundred four thousand, one hundred thirty".