15530520343 has 4 divisors (see below), whose sum is σ = 16725175768. Its totient is φ = 14335864920.

The previous prime is 15530520311. The next prime is 15530520359. The reversal of 15530520343 is 34302503551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15530520343 - 2⁵ = 15530520311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15530520443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597327693 + ... + 597327718.

It is an arithmetic number, because the mean of its divisors is an integer number (4181293942).

Almost surely, 2^15530520343 is an apocalyptic number.

15530520343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15530520343 is a deficient number, since it is larger than the sum of its proper divisors (1194655425).

15530520343 is a wasteful number, since it uses less digits than its factorization.

15530520343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194655424.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 15530520343 in words is "fifteen billion, five hundred thirty million, five hundred twenty thousand, three hundred forty-three".