26203401540 has 36 divisors (see below), whose sum is σ = 79483651884. Its totient is φ = 6987573696.

The previous prime is 26203401529. The next prime is 26203401551. The reversal of 26203401540 is 4510430262.

26203401540 is a `hidden beast` number, since 2 + 6 + 203 + 401 + 54 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26203401529) and next prime (26203401551).

It can be written as a sum of positive squares in 2 ways, for example, as 6035425344 + 20167976196 = 77688^2 + 142014^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72787047 + ... + 72787406.

It is an arithmetic number, because the mean of its divisors is an integer number (2207879219).

Almost surely, 2^26203401540 is an apocalyptic number.

26203401540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26203401540 is an abundant number, since it is smaller than the sum of its proper divisors (53280250344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26203401540 is a wasteful number, since it uses less digits than its factorization.

26203401540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145574468 (or 145574463 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 26203401540 in words is "twenty-six billion, two hundred three million, four hundred one thousand, five hundred forty".