264403620306601 has 4 divisors (see below), whose sum is σ = 273520986524100. Its totient is φ = 255286254089104.

The previous prime is 264403620306599. The next prime is 264403620306629. The reversal of 264403620306601 is 106603026304462.

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 113039934336576 + 151363685970025 = 10632024^2 + 12302995^2 .

It is a cyclic number.

It is not a de Polignac number, because 264403620306601 - 2¹ = 264403620306599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264403620306671) 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, 4558683108706 + ... + 4558683108763.

It is an arithmetic number, because the mean of its divisors is an integer number (68380246631025).

Almost surely, 2^{264403620306601} is an apocalyptic number.

It is an amenable number.

264403620306601 is a deficient number, since it is larger than the sum of its proper divisors (9117366217499).

264403620306601 is an equidigital number, since it uses as much as digits as its factorization.

264403620306601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117366217498.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 264403620306601 in words is "two hundred sixty-four trillion, four hundred three billion, six hundred twenty million, three hundred six thousand, six hundred one".