13345577779 has 8 divisors (see below), whose sum is σ = 14586438528. Its totient is φ = 12155364480.

The previous prime is 13345577759. The next prime is 13345577797. The reversal of 13345577779 is 97777554331.

It is a happy number.

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

It is not a de Polignac number, because 13345577779 - 2²³ = 13337189171 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13345577759) 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, 12661312 + ... + 12662365.

It is an arithmetic number, because the mean of its divisors is an integer number (1823304816).

Almost surely, 2^13345577779 is an apocalyptic number.

13345577779 is a deficient number, since it is larger than the sum of its proper divisors (1240860749).

13345577779 is a wasteful number, since it uses less digits than its factorization.

13345577779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25323725.

The product of its digits is 19448100, while the sum is 58.

The spelling of 13345577779 in words is "thirteen billion, three hundred forty-five million, five hundred seventy-seven thousand, seven hundred seventy-nine".