26064491633 has 8 divisors (see below), whose sum is σ = 26571117096. Its totient is φ = 25558416000.

The previous prime is 26064491561. The next prime is 26064491657. The reversal of 26064491633 is 33619446062.

It can be written as a sum of positive squares in 4 ways, for example, as 222964624 + 25841527009 = 14932^2 + 160753^2 .

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 26064491633 - 2²⁴ = 26047714417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26064491683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41078 + ... + 231983.

It is an arithmetic number, because the mean of its divisors is an integer number (3321389637).

Almost surely, 2^26064491633 is an apocalyptic number.

It is an amenable number.

26064491633 is a deficient number, since it is larger than the sum of its proper divisors (506625463).

26064491633 is a wasteful number, since it uses less digits than its factorization.

26064491633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274915.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 26064491633 in words is "twenty-six billion, sixty-four million, four hundred ninety-one thousand, six hundred thirty-three".