664526050651433 has 8 divisors (see below), whose sum is σ = 680780651701416. Its totient is φ = 648273670963200.

The previous prime is 664526050651429. The next prime is 664526050651459. The reversal of 664526050651433 is 334156050625466.

It can be written as a sum of positive squares in 4 ways, for example, as 66688733344489 + 597837317306944 = 8166317^2 + 24450712^2 .

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 664526050651433 - 2² = 664526050651429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664526050653433) 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, 554734808 + ... + 555931433.

It is an arithmetic number, because the mean of its divisors is an integer number (85097581462677).

Almost surely, 2^{664526050651433} is an apocalyptic number.

It is an amenable number.

664526050651433 is a deficient number, since it is larger than the sum of its proper divisors (16254601049983).

664526050651433 is a wasteful number, since it uses less digits than its factorization.

664526050651433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110680875.

The product of its (nonzero) digits is 46656000, while the sum is 56.

The spelling of 664526050651433 in words is "six hundred sixty-four trillion, five hundred twenty-six billion, fifty million, six hundred fifty-one thousand, four hundred thirty-three".