663713570537 has 4 divisors (see below), whose sum is σ = 665807304516. Its totient is φ = 661619836560.

The previous prime is 663713570501. The next prime is 663713570579. The reversal of 663713570537 is 735075317366.

663713570537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 357820508761 + 305893061776 = 598181^2 + 553076^2 .

It is a cyclic number.

It is not a de Polignac number, because 663713570537 - 2¹⁶ = 663713505001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663713572537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046866514 + ... + 1046867147.

It is an arithmetic number, because the mean of its divisors is an integer number (166451826129).

Almost surely, 2^663713570537 is an apocalyptic number.

It is an amenable number.

663713570537 is a deficient number, since it is larger than the sum of its proper divisors (2093733979).

663713570537 is a wasteful number, since it uses less digits than its factorization.

663713570537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093733978.

The product of its (nonzero) digits is 8334900, while the sum is 53.

The spelling of 663713570537 in words is "six hundred sixty-three billion, seven hundred thirteen million, five hundred seventy thousand, five hundred thirty-seven".