26040915038638 has 4 divisors (see below), whose sum is σ = 39061372557960. Its totient is φ = 13020457519318.

The previous prime is 26040915038597. The next prime is 26040915038711. The reversal of 26040915038638 is 83683051904062.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510228759658 + ... + 6510228759661.

It is an arithmetic number, because the mean of its divisors is an integer number (9765343139490).

Almost surely, 2^{26040915038638} is an apocalyptic number.

26040915038638 is a deficient number, since it is larger than the sum of its proper divisors (13020457519322).

26040915038638 is a wasteful number, since it uses less digits than its factorization.

26040915038638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13020457519321.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 26040915038638 in words is "twenty-six trillion, forty billion, nine hundred fifteen million, thirty-eight thousand, six hundred thirty-eight".