28692305691313 has 4 divisors (see below), whose sum is σ = 31300697117808. Its totient is φ = 26083914264820.

The previous prime is 28692305691311. The next prime is 28692305691403. The reversal of 28692305691313 is 31319650329682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28692305691313 - 2¹ = 28692305691311 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28692305691311) 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, 1304195713231 + ... + 1304195713252.

It is an arithmetic number, because the mean of its divisors is an integer number (7825174279452).

Almost surely, 2^{28692305691313} is an apocalyptic number.

It is an amenable number.

28692305691313 is a deficient number, since it is larger than the sum of its proper divisors (2608391426495).

28692305691313 is a wasteful number, since it uses less digits than its factorization.

28692305691313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608391426494.

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 28692305691313 in words is "twenty-eight trillion, six hundred ninety-two billion, three hundred five million, six hundred ninety-one thousand, three hundred thirteen".