15453313505 has 12 divisors (see below), whose sum is σ = 21571564500. Its totient is φ = 10596557664.

The previous prime is 15453313493. The next prime is 15453313507. The reversal of 15453313505 is 50531335451.

It can be written as a sum of positive squares in 2 ways, for example, as 10839100321 + 4614213184 = 104111^2 + 67928^2 .

It is not a de Polignac number, because 15453313505 - 2⁴ = 15453313489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (15453313507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31537130 + ... + 31537619.

It is an arithmetic number, because the mean of its divisors is an integer number (1797630375).

Almost surely, 2^15453313505 is an apocalyptic number.

It is an amenable number.

15453313505 is a deficient number, since it is larger than the sum of its proper divisors (6118250995).

15453313505 is an equidigital number, since it uses as much as digits as its factorization.

15453313505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63074768 (or 63074761 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 35.

Adding to 15453313505 its reverse (50531335451), we get a palindrome (65984648956).

The spelling of 15453313505 in words is "fifteen billion, four hundred fifty-three million, three hundred thirteen thousand, five hundred five".