164477560661 has 8 divisors (see below), whose sum is σ = 177357062400. Its totient is φ = 152020337760.

The previous prime is 164477560627. The next prime is 164477560673. The reversal of 164477560661 is 166065774461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164477560661 - 2³⁴ = 147297691477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164477562661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105568901 + ... + 105570458.

It is an arithmetic number, because the mean of its divisors is an integer number (22169632800).

Almost surely, 2^164477560661 is an apocalyptic number.

It is an amenable number.

164477560661 is a deficient number, since it is larger than the sum of its proper divisors (12879501739).

164477560661 is a wasteful number, since it uses less digits than its factorization.

164477560661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211139419.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 164477560661 in words is "one hundred sixty-four billion, four hundred seventy-seven million, five hundred sixty thousand, six hundred sixty-one".