26528972798 has 4 divisors (see below), whose sum is σ = 39793459200. Its totient is φ = 13264486398.

The previous prime is 26528972791. The next prime is 26528972801. The reversal of 26528972798 is 89727982562.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26528972791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6632243198 + ... + 6632243201.

It is an arithmetic number, because the mean of its divisors is an integer number (9948364800).

Almost surely, 2^26528972798 is an apocalyptic number.

26528972798 is a deficient number, since it is larger than the sum of its proper divisors (13264486402).

26528972798 is a wasteful number, since it uses less digits than its factorization.

26528972798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13264486401.

The product of its digits is 60963840, while the sum is 65.

The spelling of 26528972798 in words is "twenty-six billion, five hundred twenty-eight million, nine hundred seventy-two thousand, seven hundred ninety-eight".