35115200161661 has 4 divisors (see below), whose sum is σ = 35115805936092. Its totient is φ = 35114594387232.

The previous prime is 35115200161637. The next prime is 35115200161711. The reversal of 35115200161661 is 16616100251153.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5914210567225 + 29200989594436 = 2431915^2 + 5403794^2 .

It is a cyclic number.

It is not a de Polignac number, because 35115200161661 - 2⁶ = 35115200161597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35115200161061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302800256 + ... + 302916201.

It is an arithmetic number, because the mean of its divisors is an integer number (8778951484023).

Almost surely, 2^{35115200161661} is an apocalyptic number.

It is an amenable number.

35115200161661 is a deficient number, since it is larger than the sum of its proper divisors (605774431).

35115200161661 is an equidigital number, since it uses as much as digits as its factorization.

35115200161661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605774430.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 35115200161661 in words is "thirty-five trillion, one hundred fifteen billion, two hundred million, one hundred sixty-one thousand, six hundred sixty-one".