15450441213 has 4 divisors (see below), whose sum is σ = 20600588288. Its totient is φ = 10300294140.

The previous prime is 15450441197. The next prime is 15450441221. The reversal of 15450441213 is 31214405451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 15450441213 - 2⁴ = 15450441197 is a prime.

It is a super-2 number, since 2×15450441213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15450441263) 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, 2575073533 + ... + 2575073538.

It is an arithmetic number, because the mean of its divisors is an integer number (5150147072).

Almost surely, 2^15450441213 is an apocalyptic number.

It is an amenable number.

15450441213 is a deficient number, since it is larger than the sum of its proper divisors (5150147075).

15450441213 is an equidigital number, since it uses as much as digits as its factorization.

15450441213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150147074.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 15450441213 its reverse (31214405451), we get a palindrome (46664846664).

The spelling of 15450441213 in words is "fifteen billion, four hundred fifty million, four hundred forty-one thousand, two hundred thirteen".