26540576407 has 4 divisors (see below), whose sum is σ = 26543416176. Its totient is φ = 26537736640.

The previous prime is 26540576399. The next prime is 26540576411. The reversal of 26540576407 is 70467504562.

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

It is a cyclic number.

It is not a de Polignac number, because 26540576407 - 2³ = 26540576399 is a prime.

It is a super-4 number, since 4×26540576407⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540516407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1405819 + ... + 1424572.

It is an arithmetic number, because the mean of its divisors is an integer number (6635854044).

Almost surely, 2^26540576407 is an apocalyptic number.

26540576407 is a deficient number, since it is larger than the sum of its proper divisors (2839769).

26540576407 is an equidigital number, since it uses as much as digits as its factorization.

26540576407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839768.

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 26540576407 in words is "twenty-six billion, five hundred forty million, five hundred seventy-six thousand, four hundred seven".