26665538748 has 24 divisors (see below), whose sum is σ = 62230377552. Its totient is φ = 8886971904.

The previous prime is 26665538743. The next prime is 26665538759. The reversal of 26665538748 is 84783556662.

It is a super-2 number, since 2×26665538748² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26665538691 and 26665538700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26665538741) 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 7 ways as a sum of consecutive naturals, for example, 119415 + ... + 259982.

It is an arithmetic number, because the mean of its divisors is an integer number (2592932398).

Almost surely, 2^26665538748 is an apocalyptic number.

It is an amenable number.

26665538748 is an abundant number, since it is smaller than the sum of its proper divisors (35564838804).

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

26665538748 is a wasteful number, since it uses less digits than its factorization.

26665538748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385261 (or 385259 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 60.

The spelling of 26665538748 in words is "twenty-six billion, six hundred sixty-five million, five hundred thirty-eight thousand, seven hundred forty-eight".