26401255361635 has 32 divisors (see below), whose sum is σ = 39727339149312. Its totient is φ = 16362792862080.

The previous prime is 26401255361603. The next prime is 26401255361681. The reversal of 26401255361635 is 53616355210462.

It is not a de Polignac number, because 26401255361635 - 2⁵ = 26401255361603 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198126139 + ... + 198259348.

It is an arithmetic number, because the mean of its divisors is an integer number (1241479348416).

Almost surely, 2^{26401255361635} is an apocalyptic number.

26401255361635 is a deficient number, since it is larger than the sum of its proper divisors (13326083787677).

26401255361635 is a wasteful number, since it uses less digits than its factorization.

26401255361635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396385683.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 26401255361635 in words is "twenty-six trillion, four hundred one billion, two hundred fifty-five million, three hundred sixty-one thousand, six hundred thirty-five".