26540005632001 has 4 divisors (see below), whose sum is σ = 26975087691604. Its totient is φ = 26104923572400.

The previous prime is 26540005631989. The next prime is 26540005632013. The reversal of 26540005632001 is 10023650004562.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (26540005631989) and next prime (26540005632013).

It can be written as a sum of positive squares in 2 ways, for example, as 1760069208976 + 24779936423025 = 1326676^2 + 4977945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26540005632001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26540005632071) 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, 217541029710 + ... + 217541029831.

It is an arithmetic number, because the mean of its divisors is an integer number (6743771922901).

Almost surely, 2^{26540005632001} is an apocalyptic number.

It is an amenable number.

26540005632001 is a deficient number, since it is larger than the sum of its proper divisors (435082059603).

26540005632001 is an equidigital number, since it uses as much as digits as its factorization.

26540005632001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435082059602.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 26540005632001 its reverse (10023650004562), we get a palindrome (36563655636563).

The spelling of 26540005632001 in words is "twenty-six trillion, five hundred forty billion, five million, six hundred thirty-two thousand, one".