28318152413 has 4 divisors (see below), whose sum is σ = 28318492860. Its totient is φ = 28317811968.

The previous prime is 28318152409. The next prime is 28318152419. The reversal of 28318152413 is 31425181382.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 16296564964 + 12021587449 = 127658^2 + 109643^2 .

It is a cyclic number.

It is not a de Polignac number, because 28318152413 - 2² = 28318152409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318152419) 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, 46643 + ... + 242511.

It is an arithmetic number, because the mean of its divisors is an integer number (7079623215).

Almost surely, 2^28318152413 is an apocalyptic number.

It is an amenable number.

28318152413 is a deficient number, since it is larger than the sum of its proper divisors (340447).

28318152413 is a wasteful number, since it uses less digits than its factorization.

28318152413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340446.

The product of its digits is 46080, while the sum is 38.

The spelling of 28318152413 in words is "twenty-eight billion, three hundred eighteen million, one hundred fifty-two thousand, four hundred thirteen".