26145483640 has 16 divisors (see below), whose sum is σ = 58827338280. Its totient is φ = 10458193440.

The previous prime is 26145483589. The next prime is 26145483671. The reversal of 26145483640 is 4638454162.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 326818506 + ... + 326818585.

Almost surely, 2^26145483640 is an apocalyptic number.

26145483640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26145483640 is an abundant number, since it is smaller than the sum of its proper divisors (32681854640).

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

26145483640 is a wasteful number, since it uses less digits than its factorization.

26145483640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653637102 (or 653637098 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 26145483640 in words is "twenty-six billion, one hundred forty-five million, four hundred eighty-three thousand, six hundred forty".