164679390401 has 4 divisors (see below), whose sum is σ = 170357990100. Its totient is φ = 159000790704.

The previous prime is 164679390391. The next prime is 164679390409. The reversal of 164679390401 is 104093976461.

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 63504504001 + 101174886400 = 252001^2 + 318080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164679390401 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 164679390401.

It is not an unprimeable number, because it can be changed into a prime (164679390409) 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, 2839299806 + ... + 2839299863.

It is an arithmetic number, because the mean of its divisors is an integer number (42589497525).

Almost surely, 2^164679390401 is an apocalyptic number.

It is an amenable number.

164679390401 is a deficient number, since it is larger than the sum of its proper divisors (5678599699).

164679390401 is an equidigital number, since it uses as much as digits as its factorization.

164679390401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678599698.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 164679390401 in words is "one hundred sixty-four billion, six hundred seventy-nine million, three hundred ninety thousand, four hundred one".