320787172036 has 12 divisors (see below), whose sum is σ = 562237245612. Its totient is φ = 160147959008.

The previous prime is 320787172031. The next prime is 320787172091. The reversal of 320787172036 is 630271787023.

It can be written as a sum of positive squares in 2 ways, for example, as 210093889600 + 110693282436 = 458360^2 + 332706^2 .

It is not an unprimeable number, because it can be changed into a prime (320787172031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61403815 + ... + 61409038.

It is an arithmetic number, because the mean of its divisors is an integer number (46853103801).

Almost surely, 2^320787172036 is an apocalyptic number.

It is an amenable number.

320787172036 is a deficient number, since it is larger than the sum of its proper divisors (241450073576).

320787172036 is a wasteful number, since it uses less digits than its factorization.

320787172036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122813510 (or 122813508 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 320787172036 in words is "three hundred twenty billion, seven hundred eighty-seven million, one hundred seventy-two thousand, thirty-six".