35506556661 has 4 divisors (see below), whose sum is σ = 47342075552. Its totient is φ = 23671037772.

The previous prime is 35506556647. The next prime is 35506556663. The reversal of 35506556661 is 16665560553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 35506556661 - 2¹⁵ = 35506523893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 35506556661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35506556663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5917759441 + ... + 5917759446.

It is an arithmetic number, because the mean of its divisors is an integer number (11835518888).

Almost surely, 2^35506556661 is an apocalyptic number.

It is an amenable number.

35506556661 is a deficient number, since it is larger than the sum of its proper divisors (11835518891).

35506556661 is a wasteful number, since it uses less digits than its factorization.

35506556661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11835518890.

The product of its (nonzero) digits is 2430000, while the sum is 48.

The spelling of 35506556661 in words is "thirty-five billion, five hundred six million, five hundred fifty-six thousand, six hundred sixty-one".