26663435061552 has 60 divisors (see below), whose sum is σ = 74622696230160. Its totient is φ = 8887560299904.

The previous prime is 26663435061551. The next prime is 26663435061559. The reversal of 26663435061552 is 25516053436662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26663435061551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2525149 + ... + 7726787.

It is an arithmetic number, because the mean of its divisors is an integer number (1243711603836).

Almost surely, 2^{26663435061552} is an apocalyptic number.

It is an amenable number.

26663435061552 is an abundant number, since it is smaller than the sum of its proper divisors (47959261168608).

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

26663435061552 is a wasteful number, since it uses less digits than its factorization.

26663435061552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237250 (or 5237241 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 54.

The spelling of 26663435061552 in words is "twenty-six trillion, six hundred sixty-three billion, four hundred thirty-five million, sixty-one thousand, five hundred fifty-two".