13131772366 has 32 divisors (see below), whose sum is σ = 22032479520. Its totient is φ = 5833497600.

The previous prime is 13131772343. The next prime is 13131772369. The reversal of 13131772366 is 66327713131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131772369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145356 + ... + 217696.

It is an arithmetic number, because the mean of its divisors is an integer number (688514985).

Almost surely, 2^13131772366 is an apocalyptic number.

13131772366 is a deficient number, since it is larger than the sum of its proper divisors (8900707154).

13131772366 is a wasteful number, since it uses less digits than its factorization.

13131772366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72660.

The product of its digits is 95256, while the sum is 40.

The spelling of 13131772366 in words is "thirteen billion, one hundred thirty-one million, seven hundred seventy-two thousand, three hundred sixty-six".