13259780354 has 16 divisors (see below), whose sum is σ = 20629490616. Its totient is φ = 6386832000.

The previous prime is 13259780353. The next prime is 13259780383. The reversal of 13259780354 is 45308795231.

It can be written as a sum of positive squares in 4 ways, for example, as 11071879729 + 2187900625 = 105223^2 + 46775^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13259780299 and 13259780308.

It is not an unprimeable number, because it can be changed into a prime (13259780351) 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, 879587 + ... + 894534.

Almost surely, 2^13259780354 is an apocalyptic number.

13259780354 is a deficient number, since it is larger than the sum of its proper divisors (7369710262).

13259780354 is a wasteful number, since it uses less digits than its factorization.

13259780354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774261.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 13259780354 in words is "thirteen billion, two hundred fifty-nine million, seven hundred eighty thousand, three hundred fifty-four".