15542241440 has 96 divisors (see below), whose sum is σ = 41437992960. Its totient is φ = 5456819200.

The previous prime is 15542241409. The next prime is 15542241457. The reversal of 15542241440 is 4414224551.

It is a super-2 number, since 2×15542241440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 15542241397 and 15542241406.

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, 101216 + ... + 203295.

It is an arithmetic number, because the mean of its divisors is an integer number (431645760).

Almost surely, 2^15542241440 is an apocalyptic number.

15542241440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15542241440 is an abundant number, since it is smaller than the sum of its proper divisors (25895751520).

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

15542241440 is a wasteful number, since it uses less digits than its factorization.

15542241440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304566 (or 304558 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 15542241440 its reverse (4414224551), we get a palindrome (19956465991).

The spelling of 15542241440 in words is "fifteen billion, five hundred forty-two million, two hundred forty-one thousand, four hundred forty".