662640537511 has 2 divisors, whose sum is σ = 662640537512. Its totient is φ = 662640537510.

The previous prime is 662640537401. The next prime is 662640537521. The reversal of 662640537511 is 115735046266.

662640537511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662640537511 - 2¹³ = 662640529319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662640537521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331320268755 + 331320268756.

It is an arithmetic number, because the mean of its divisors is an integer number (331320268756).

Almost surely, 2^662640537511 is an apocalyptic number.

662640537511 is a deficient number, since it is larger than the sum of its proper divisors (1).

662640537511 is an equidigital number, since it uses as much as digits as its factorization.

662640537511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 662640537511 in words is "six hundred sixty-two billion, six hundred forty million, five hundred thirty-seven thousand, five hundred eleven".