13553331061 has 4 divisors (see below), whose sum is σ = 13602260332. Its totient is φ = 13504401792.

The previous prime is 13553330977. The next prime is 13553331067. The reversal of 13553331061 is 16013335531.

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 1756112836 + 11797218225 = 41906^2 + 108615^2 .

It is a cyclic number.

It is not a de Polignac number, because 13553331061 - 2³¹ = 11405847413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553331067) 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, 24464220 + ... + 24464773.

It is an arithmetic number, because the mean of its divisors is an integer number (3400565083).

Almost surely, 2^13553331061 is an apocalyptic number.

It is an amenable number.

13553331061 is a deficient number, since it is larger than the sum of its proper divisors (48929271).

13553331061 is an equidigital number, since it uses as much as digits as its factorization.

13553331061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48929270.

The product of its (nonzero) digits is 12150, while the sum is 31.

Adding to 13553331061 its reverse (16013335531), we get a palindrome (29566666592).

The spelling of 13553331061 in words is "thirteen billion, five hundred fifty-three million, three hundred thirty-one thousand, sixty-one".