12778325583 has 4 divisors (see below), whose sum is σ = 17037767448. Its totient is φ = 8518883720.

The previous prime is 12778325563. The next prime is 12778325597. The reversal of 12778325583 is 38552387721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12778325583 - 2¹² = 12778321487 is a prime.

It is a super-3 number, since 3×12778325583³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778325563) 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, 2129720928 + ... + 2129720933.

It is an arithmetic number, because the mean of its divisors is an integer number (4259441862).

Almost surely, 2^12778325583 is an apocalyptic number.

12778325583 is a deficient number, since it is larger than the sum of its proper divisors (4259441865).

12778325583 is an equidigital number, since it uses as much as digits as its factorization.

12778325583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259441864.

The product of its digits is 2822400, while the sum is 51.

The spelling of 12778325583 in words is "twelve billion, seven hundred seventy-eight million, three hundred twenty-five thousand, five hundred eighty-three".