13172780326 has 8 divisors (see below), whose sum is σ = 19763445600. Its totient is φ = 6584965128.

The previous prime is 13172780303. The next prime is 13172780371. The reversal of 13172780326 is 62308727131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700926 + ... + 719473.

It is an arithmetic number, because the mean of its divisors is an integer number (2470430700).

Almost surely, 2^13172780326 is an apocalyptic number.

13172780326 is a deficient number, since it is larger than the sum of its proper divisors (6590665274).

13172780326 is a wasteful number, since it uses less digits than its factorization.

13172780326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425038.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 13172780326 in words is "thirteen billion, one hundred seventy-two million, seven hundred eighty thousand, three hundred twenty-six".