15503453113 has 4 divisors (see below), whose sum is σ = 15602201380. Its totient is φ = 15404704848.

The previous prime is 15503453107. The next prime is 15503453131. The reversal of 15503453113 is 31135430551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1292905849 + 14210547264 = 35957^2 + 119208^2 .

It is a cyclic number.

It is not a de Polignac number, because 15503453113 - 2⁵ = 15503453081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15503453143) 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, 49373898 + ... + 49374211.

It is an arithmetic number, because the mean of its divisors is an integer number (3900550345).

Almost surely, 2^15503453113 is an apocalyptic number.

It is an amenable number.

15503453113 is a deficient number, since it is larger than the sum of its proper divisors (98748267).

15503453113 is an equidigital number, since it uses as much as digits as its factorization.

15503453113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98748266.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 15503453113 its reverse (31135430551), we get a palindrome (46638883664).

The spelling of 15503453113 in words is "fifteen billion, five hundred three million, four hundred fifty-three thousand, one hundred thirteen".