526604666401 has 6 divisors (see below), whose sum is σ = 578829922706. Its totient is φ = 478731514800.

The previous prime is 526604666383. The next prime is 526604666453. The reversal of 526604666401 is 104666406625.

It can be written as a sum of positive squares in only one way, i.e., 468656622225 + 57948044176 = 684585^2 + 240724^2 .

It is not a de Polignac number, because 526604666401 - 2¹¹ = 526604664353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (526608666401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2176052220 + ... + 2176052461.

Almost surely, 2^526604666401 is an apocalyptic number.

It is an amenable number.

526604666401 is a deficient number, since it is larger than the sum of its proper divisors (52225256305).

526604666401 is a wasteful number, since it uses less digits than its factorization.

526604666401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352104703 (or 4352104692 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 526604666401 in words is "five hundred twenty-six billion, six hundred four million, six hundred sixty-six thousand, four hundred one".