35685112621 has 2 divisors, whose sum is σ = 35685112622. Its totient is φ = 35685112620.

The previous prime is 35685112601. The next prime is 35685112717. The reversal of 35685112621 is 12621158653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33370155625 + 2314956996 = 182675^2 + 48114^2 .

It is an emirp because it is prime and its reverse (12621158653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35685112621 - 2⁹ = 35685112109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35685112601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17842556310 + 17842556311.

It is an arithmetic number, because the mean of its divisors is an integer number (17842556311).

Almost surely, 2^35685112621 is an apocalyptic number.

It is an amenable number.

35685112621 is a deficient number, since it is larger than the sum of its proper divisors (1).

35685112621 is an equidigital number, since it uses as much as digits as its factorization.

35685112621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The spelling of 35685112621 in words is "thirty-five billion, six hundred eighty-five million, one hundred twelve thousand, six hundred twenty-one".