13565120783 has 8 divisors (see below), whose sum is σ = 13665477840. Its totient is φ = 13464803520.

The previous prime is 13565120761. The next prime is 13565120791. The reversal of 13565120783 is 38702156531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13565120783 - 2¹² = 13565116687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13565120783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13565120083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359593 + ... + 1369533.

It is an arithmetic number, because the mean of its divisors is an integer number (1708184730).

Almost surely, 2^13565120783 is an apocalyptic number.

13565120783 is a deficient number, since it is larger than the sum of its proper divisors (100357057).

13565120783 is an equidigital number, since it uses as much as digits as its factorization.

13565120783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19897.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 13565120783 in words is "thirteen billion, five hundred sixty-five million, one hundred twenty thousand, seven hundred eighty-three".