15530346240 has 144 divisors (see below), whose sum is σ = 50413919136. Its totient is φ = 4073472000.

The previous prime is 15530346197. The next prime is 15530346287. The reversal of 15530346240 is 4264303551.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 201090 + ... + 267390.

Almost surely, 2^15530346240 is an apocalyptic number.

15530346240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15530346240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25206959568).

15530346240 is an abundant number, since it is smaller than the sum of its proper divisors (34883572896).

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

15530346240 is an equidigital number, since it uses as much as digits as its factorization.

15530346240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66386 (or 66372 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 15530346240 its reverse (4264303551), we get a palindrome (19794649791).

The spelling of 15530346240 in words is "fifteen billion, five hundred thirty million, three hundred forty-six thousand, two hundred forty".