15540341208 has 128 divisors (see below), whose sum is σ = 44910720000. Its totient is φ = 4389419520.

The previous prime is 15540341171. The next prime is 15540341221. The reversal of 15540341208 is 80214304551.

It is a super-2 number, since 2×15540341208² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5730973 + ... + 5733683.

It is an arithmetic number, because the mean of its divisors is an integer number (350865000).

Almost surely, 2^15540341208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15540341208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22455360000).

15540341208 is an abundant number, since it is smaller than the sum of its proper divisors (29370378792).

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

15540341208 is a wasteful number, since it uses less digits than its factorization.

15540341208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 15540341208 its reverse (80214304551), we get a palindrome (95754645759).

The spelling of 15540341208 in words is "fifteen billion, five hundred forty million, three hundred forty-one thousand, two hundred eight".