152120775716681 has 2 divisors, whose sum is σ = 152120775716682. Its totient is φ = 152120775716680.

The previous prime is 152120775716627. The next prime is 152120775716729. The reversal of 152120775716681 is 186617577021251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143561733975625 + 8559041741056 = 11981725^2 + 2925584^2 .

It is a cyclic number.

It is not a de Polignac number, because 152120775716681 - 2¹⁴ = 152120775700297 is a prime.

It is a super-2 number, since 2×152120775716681² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 152120775716681.

It is not a weakly prime, because it can be changed into another prime (152120775710681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76060387858340 + 76060387858341.

It is an arithmetic number, because the mean of its divisors is an integer number (76060387858341).

Almost surely, 2^{152120775716681} is an apocalyptic number.

It is an amenable number.

152120775716681 is a deficient number, since it is larger than the sum of its proper divisors (1).

152120775716681 is an equidigital number, since it uses as much as digits as its factorization.

152120775716681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9878400, while the sum is 59.

The spelling of 152120775716681 in words is "one hundred fifty-two trillion, one hundred twenty billion, seven hundred seventy-five million, seven hundred sixteen thousand, six hundred eighty-one".