13531200506 has 4 divisors (see below), whose sum is σ = 20296800762. Its totient is φ = 6765600252.

The previous prime is 13531200497. The next prime is 13531200511. The reversal of 13531200506 is 60500213531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60500213531 = 281 ⋅215303251.

It can be written as a sum of positive squares in only one way, i.e., 7741360225 + 5789840281 = 87985^2 + 76091^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382800125 + ... + 3382800128.

Almost surely, 2^13531200506 is an apocalyptic number.

13531200506 is a deficient number, since it is larger than the sum of its proper divisors (6765600256).

13531200506 is an equidigital number, since it uses as much as digits as its factorization.

13531200506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765600255.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 13531200506 in words is "thirteen billion, five hundred thirty-one million, two hundred thousand, five hundred six".