35665441031021 has 2 divisors, whose sum is σ = 35665441031022. Its totient is φ = 35665441031020.

The previous prime is 35665441030997. The next prime is 35665441031081. The reversal of 35665441031021 is 12013014456653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32234744329225 + 3430696701796 = 5677565^2 + 1852214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35665441031021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 35665441031021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35665441031081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17832720515510 + 17832720515511.

It is an arithmetic number, because the mean of its divisors is an integer number (17832720515511).

Almost surely, 2^{35665441031021} is an apocalyptic number.

It is an amenable number.

35665441031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

35665441031021 is an equidigital number, since it uses as much as digits as its factorization.

35665441031021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 35665441031021 its reverse (12013014456653), we get a palindrome (47678455487674).

The spelling of 35665441031021 in words is "thirty-five trillion, six hundred sixty-five billion, four hundred forty-one million, thirty-one thousand, twenty-one".