265120150721 has 2 divisors, whose sum is σ = 265120150722. Its totient is φ = 265120150720.

The previous prime is 265120150709. The next prime is 265120150739. The reversal of 265120150721 is 127051021562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245698662400 + 19421488321 = 495680^2 + 139361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265120150721 is a prime.

It is not a weakly prime, because it can be changed into another prime (265120150121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132560075360 + 132560075361.

It is an arithmetic number, because the mean of its divisors is an integer number (132560075361).

Almost surely, 2^265120150721 is an apocalyptic number.

It is an amenable number.

265120150721 is a deficient number, since it is larger than the sum of its proper divisors (1).

265120150721 is an equidigital number, since it uses as much as digits as its factorization.

265120150721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 265120150721 in words is "two hundred sixty-five billion, one hundred twenty million, one hundred fifty thousand, seven hundred twenty-one".