15540300450 has 144 divisors (see below), whose sum is σ = 44273193120. Its totient is φ = 3897020160.

The previous prime is 15540300449. The next prime is 15540300467. The reversal of 15540300450 is 5400304551.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1164717 + ... + 1177983.

It is an arithmetic number, because the mean of its divisors is an integer number (307452730).

Almost surely, 2^15540300450 is an apocalyptic number.

15540300450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15540300450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22136596560).

15540300450 is an abundant number, since it is smaller than the sum of its proper divisors (28732892670).

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

15540300450 is a wasteful number, since it uses less digits than its factorization.

15540300450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13441 (or 13433 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 15540300450 in words is "fifteen billion, five hundred forty million, three hundred thousand, four hundred fifty".