15530345450 has 24 divisors (see below), whose sum is σ = 28908334272. Its totient is φ = 6207430320.

The previous prime is 15530345449. The next prime is 15530345491. The reversal of 15530345450 is 5454303551.

It is a self number, because there is not a number n which added to its sum of digits gives 15530345450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50684 + ... + 183383.

It is an arithmetic number, because the mean of its divisors is an integer number (1204513928).

Almost surely, 2^15530345450 is an apocalyptic number.

15530345450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15530345450 is a deficient number, since it is larger than the sum of its proper divisors (13377988822).

15530345450 is a wasteful number, since it uses less digits than its factorization.

15530345450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235406 (or 235401 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 15530345450 in words is "fifteen billion, five hundred thirty million, three hundred forty-five thousand, four hundred fifty".