662806748135537 has 2 divisors, whose sum is σ = 662806748135538. Its totient is φ = 662806748135536.

The previous prime is 662806748135527. The next prime is 662806748135611. The reversal of 662806748135537 is 735531847608266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624041567718976 + 38765180416561 = 24980824^2 + 6226169^2 .

It is a cyclic number.

It is not a de Polignac number, because 662806748135537 - 2²⁰ = 662806747086961 is a prime.

It is not a weakly prime, because it can be changed into another prime (662806748135527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331403374067768 + 331403374067769.

It is an arithmetic number, because the mean of its divisors is an integer number (331403374067769).

Almost surely, 2^{662806748135537} is an apocalyptic number.

It is an amenable number.

662806748135537 is a deficient number, since it is larger than the sum of its proper divisors (1).

662806748135537 is an equidigital number, since it uses as much as digits as its factorization.

662806748135537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1219276800, while the sum is 71.

The spelling of 662806748135537 in words is "six hundred sixty-two trillion, eight hundred six billion, seven hundred forty-eight million, one hundred thirty-five thousand, five hundred thirty-seven".