52170611066661 has 4 divisors (see below), whose sum is σ = 69560814755552. Its totient is φ = 34780407377772.

The previous prime is 52170611066591. The next prime is 52170611066683. The reversal of 52170611066661 is 16666011607125.

It is a happy number.

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 52170611066661 - 2¹⁷ = 52170610935589 is a prime.

It is a super-2 number, since 2×52170611066661² (a number of 28 digits) contains 22 as substring.

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 52170611066661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52170611066261) 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, 8695101844441 + ... + 8695101844446.

It is an arithmetic number, because the mean of its divisors is an integer number (17390203688888).

Almost surely, 2^{52170611066661} is an apocalyptic number.

It is an amenable number.

52170611066661 is a deficient number, since it is larger than the sum of its proper divisors (17390203688891).

52170611066661 is a wasteful number, since it uses less digits than its factorization.

52170611066661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17390203688890.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 52170611066661 in words is "fifty-two trillion, one hundred seventy billion, six hundred eleven million, sixty-six thousand, six hundred sixty-one".