10535901661 has 2 divisors, whose sum is σ = 10535901662. Its totient is φ = 10535901660.

The previous prime is 10535901643. The next prime is 10535901743. The reversal of 10535901661 is 16610953501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7515849636 + 3020052025 = 86694^2 + 54955^2 .

It is a cyclic number.

It is not a de Polignac number, because 10535901661 - 2¹¹ = 10535899613 is a prime.

It is a super-2 number, since 2×10535901661² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10535901661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10535901631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5267950830 + 5267950831.

It is an arithmetic number, because the mean of its divisors is an integer number (5267950831).

Almost surely, 2^10535901661 is an apocalyptic number.

It is an amenable number.

10535901661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10535901661 is an equidigital number, since it uses as much as digits as its factorization.

10535901661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 37.

The spelling of 10535901661 in words is "ten billion, five hundred thirty-five million, nine hundred one thousand, six hundred sixty-one".