153266256353981 has 2 divisors, whose sum is σ = 153266256353982. Its totient is φ = 153266256353980.

The previous prime is 153266256353897. The next prime is 153266256354017. The reversal of 153266256353981 is 189353652662351.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142754823480025 + 10511432873956 = 11948005^2 + 3242134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153266256353981 is a prime.

It is a super-2 number, since 2×153266256353981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153266256353081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76633128176990 + 76633128176991.

It is an arithmetic number, because the mean of its divisors is an integer number (76633128176991).

Almost surely, 2^{153266256353981} is an apocalyptic number.

It is an amenable number.

153266256353981 is a deficient number, since it is larger than the sum of its proper divisors (1).

153266256353981 is an equidigital number, since it uses as much as digits as its factorization.

153266256353981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952000, while the sum is 65.

The spelling of 153266256353981 in words is "one hundred fifty-three trillion, two hundred sixty-six billion, two hundred fifty-six million, three hundred fifty-three thousand, nine hundred eighty-one".