662552138081 has 2 divisors, whose sum is σ = 662552138082. Its totient is φ = 662552138080.

The previous prime is 662552138033. The next prime is 662552138089. The reversal of 662552138081 is 180831255266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392759157025 + 269792981056 = 626705^2 + 519416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662552138081 is a prime.

It is a super-2 number, since 2×662552138081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (662552138089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331276069040 + 331276069041.

It is an arithmetic number, because the mean of its divisors is an integer number (331276069041).

Almost surely, 2^662552138081 is an apocalyptic number.

It is an amenable number.

662552138081 is a deficient number, since it is larger than the sum of its proper divisors (1).

662552138081 is an equidigital number, since it uses as much as digits as its factorization.

662552138081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 662552138081 in words is "six hundred sixty-two billion, five hundred fifty-two million, one hundred thirty-eight thousand, eighty-one".