662741227481 has 2 divisors, whose sum is σ = 662741227482. Its totient is φ = 662741227480.

The previous prime is 662741227459. The next prime is 662741227529. The reversal of 662741227481 is 184722147266.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606816072256 + 55925155225 = 778984^2 + 236485^2 .

It is a cyclic number.

It is not a de Polignac number, because 662741227481 - 2³⁰ = 661667485657 is a prime.

It is a super-2 number, since 2×662741227481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (662741227781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331370613740 + 331370613741.

It is an arithmetic number, because the mean of its divisors is an integer number (331370613741).

Almost surely, 2^662741227481 is an apocalyptic number.

It is an amenable number.

662741227481 is a deficient number, since it is larger than the sum of its proper divisors (1).

662741227481 is an equidigital number, since it uses as much as digits as its factorization.

662741227481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 50.

The spelling of 662741227481 in words is "six hundred sixty-two billion, seven hundred forty-one million, two hundred twenty-seven thousand, four hundred eighty-one".