152660451221 has 2 divisors, whose sum is σ = 152660451222. Its totient is φ = 152660451220.

The previous prime is 152660451169. The next prime is 152660451247. The reversal of 152660451221 is 122154066251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142166702500 + 10493748721 = 377050^2 + 102439^2 .

It is a cyclic number.

It is not a de Polignac number, because 152660451221 - 2¹⁰ = 152660450197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152660451521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76330225610 + 76330225611.

It is an arithmetic number, because the mean of its divisors is an integer number (76330225611).

Almost surely, 2^152660451221 is an apocalyptic number.

It is an amenable number.

152660451221 is a deficient number, since it is larger than the sum of its proper divisors (1).

152660451221 is an equidigital number, since it uses as much as digits as its factorization.

152660451221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 152660451221 in words is "one hundred fifty-two billion, six hundred sixty million, four hundred fifty-one thousand, two hundred twenty-one".