15530451140 has 48 divisors (see below), whose sum is σ = 33325311600. Its totient is φ = 6077360640.

The previous prime is 15530451119. The next prime is 15530451191. The reversal of 15530451140 is 4115403551.

It can be written as a sum of positive squares in 8 ways, for example, as 369946756 + 15160504384 = 19234^2 + 123128^2 .

It is a super-2 number, since 2×15530451140² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348950 + ... + 390930.

It is an arithmetic number, because the mean of its divisors is an integer number (694277325).

Almost surely, 2^15530451140 is an apocalyptic number.

15530451140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15530451140 is an abundant number, since it is smaller than the sum of its proper divisors (17794860460).

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

15530451140 is a wasteful number, since it uses less digits than its factorization.

15530451140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42392 (or 42390 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 15530451140 its reverse (4115403551), we get a palindrome (19645854691).

The spelling of 15530451140 in words is "fifteen billion, five hundred thirty million, four hundred fifty-one thousand, one hundred forty".