9435624535661 has 2 divisors, whose sum is σ = 9435624535662. Its totient is φ = 9435624535660.

The previous prime is 9435624535627. The next prime is 9435624535679. The reversal of 9435624535661 is 1665354265349.

It is a happy number.

9435624535661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4970090596900 + 4465533938761 = 2229370^2 + 2113181^2 .

It is an emirp because it is prime and its reverse (1665354265349) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9435624535661 - 2²⁶ = 9435557426797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9435624535661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9435624535361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4717812267830 + 4717812267831.

It is an arithmetic number, because the mean of its divisors is an integer number (4717812267831).

Almost surely, 2^{9435624535661} is an apocalyptic number.

It is an amenable number.

9435624535661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9435624535661 is an equidigital number, since it uses as much as digits as its factorization.

9435624535661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984000, while the sum is 59.

The spelling of 9435624535661 in words is "nine trillion, four hundred thirty-five billion, six hundred twenty-four million, five hundred thirty-five thousand, six hundred sixty-one".