26819341521 has 32 divisors (see below), whose sum is σ = 43684558848. Its totient is φ = 14301471360.

The previous prime is 26819341513. The next prime is 26819341541. The reversal of 26819341521 is 12514391862.

It is not a de Polignac number, because 26819341521 - 2³ = 26819341513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26819341541) 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 31 ways as a sum of consecutive naturals, for example, 657351 + ... + 696956.

It is an arithmetic number, because the mean of its divisors is an integer number (1365142464).

Almost surely, 2^26819341521 is an apocalyptic number.

26819341521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26819341521 is a deficient number, since it is larger than the sum of its proper divisors (16865217327).

26819341521 is a wasteful number, since it uses less digits than its factorization.

26819341521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354381.

The product of its digits is 103680, while the sum is 42.

The spelling of 26819341521 in words is "twenty-six billion, eight hundred nineteen million, three hundred forty-one thousand, five hundred twenty-one".