26405402055 has 96 divisors (see below), whose sum is σ = 44930350080. Its totient is φ = 13234752000.

The previous prime is 26405402029. The next prime is 26405402059. The reversal of 26405402055 is 55020450462.

It is not a de Polignac number, because 26405402055 - 2¹⁹ = 26404877767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405402059) 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 95 ways as a sum of consecutive naturals, for example, 105200680 + ... + 105200930.

It is an arithmetic number, because the mean of its divisors is an integer number (468024480).

Almost surely, 2^26405402055 is an apocalyptic number.

26405402055 is a deficient number, since it is larger than the sum of its proper divisors (18524948025).

26405402055 is a wasteful number, since it uses less digits than its factorization.

26405402055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 26405402055 in words is "twenty-six billion, four hundred five million, four hundred two thousand, fifty-five".