164847284007661 has 4 divisors (see below), whose sum is σ = 164937710385792. Its totient is φ = 164756857629532.

The previous prime is 164847284007631. The next prime is 164847284007667. The reversal of 164847284007661 is 166700482748461.

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 a cyclic number.

It is not a de Polignac number, because 164847284007661 - 2⁷ = 164847284007533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164847284007593 and 164847284007602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164847284007667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45213186331 + ... + 45213189976.

It is an arithmetic number, because the mean of its divisors is an integer number (41234427596448).

Almost surely, 2^{164847284007661} is an apocalyptic number.

It is an amenable number.

164847284007661 is a deficient number, since it is larger than the sum of its proper divisors (90426378131).

164847284007661 is an equidigital number, since it uses as much as digits as its factorization.

164847284007661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90426378130.

The product of its (nonzero) digits is 86704128, while the sum is 64.

The spelling of 164847284007661 in words is "one hundred sixty-four trillion, eight hundred forty-seven billion, two hundred eighty-four million, seven thousand, six hundred sixty-one".