15545213000 has 64 divisors (see below), whose sum is σ = 36736193520. Its totient is φ = 6156480000.

The previous prime is 15545212999. The next prime is 15545213003. The reversal of 15545213000 is 31254551.

It can be written as a sum of positive squares in 8 ways, for example, as 599172484 + 14946040516 = 24478^2 + 122254^2 .

It is not an unprimeable number, because it can be changed into a prime (15545213003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24044 + ... + 177956.

Almost surely, 2^15545213000 is an apocalyptic number.

15545213000 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 15545213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18368096760).

15545213000 is an abundant number, since it is smaller than the sum of its proper divisors (21190980520).

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

15545213000 is a wasteful number, since it uses less digits than its factorization.

15545213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154035 (or 154021 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 15545213000 its reverse (31254551), we get a palindrome (15576467551).

The spelling of 15545213000 in words is "fifteen billion, five hundred forty-five million, two hundred thirteen thousand".