35673637661 has 2 divisors, whose sum is σ = 35673637662. Its totient is φ = 35673637660.

The previous prime is 35673637639. The next prime is 35673637669. The reversal of 35673637661 is 16673637653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20299125625 + 15374512036 = 142475^2 + 123994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35673637661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35673637669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17836818830 + 17836818831.

It is an arithmetic number, because the mean of its divisors is an integer number (17836818831).

Almost surely, 2^35673637661 is an apocalyptic number.

It is an amenable number.

35673637661 is a deficient number, since it is larger than the sum of its proper divisors (1).

35673637661 is an equidigital number, since it uses as much as digits as its factorization.

35673637661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8573040, while the sum is 53.

The spelling of 35673637661 in words is "thirty-five billion, six hundred seventy-three million, six hundred thirty-seven thousand, six hundred sixty-one".