26400201605 has 16 divisors (see below), whose sum is σ = 33486024000. Its totient is φ = 19925533440.

The previous prime is 26400201577. The next prime is 26400201661. The reversal of 26400201605 is 50610200462.

It is not a de Polignac number, because 26400201605 - 2⁸ = 26400201349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553655 + ... + 599444.

It is an arithmetic number, because the mean of its divisors is an integer number (2092876500).

Almost surely, 2^26400201605 is an apocalyptic number.

It is an amenable number.

26400201605 is a deficient number, since it is larger than the sum of its proper divisors (7085822395).

26400201605 is a wasteful number, since it uses less digits than its factorization.

26400201605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153364.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 26400201605 in words is "twenty-six billion, four hundred million, two hundred one thousand, six hundred five".