13828779091 has 8 divisors (see below), whose sum is σ = 13848905664. Its totient is φ = 13808669160.

The previous prime is 13828779077. The next prime is 13828779109. The reversal of 13828779091 is 19097782831.

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 13828779091 - 2¹³ = 13828770899 is a prime.

It is a super-2 number, since 2×13828779091² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13828779001) 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, 3001996 + ... + 3006598.

It is an arithmetic number, because the mean of its divisors is an integer number (1731113208).

Almost surely, 2^13828779091 is an apocalyptic number.

13828779091 is a deficient number, since it is larger than the sum of its proper divisors (20126573).

13828779091 is a wasteful number, since it uses less digits than its factorization.

13828779091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 13828779091 in words is "thirteen billion, eight hundred twenty-eight million, seven hundred seventy-nine thousand, ninety-one".