26980140066 has 16 divisors (see below), whose sum is σ = 58865760288. Its totient is φ = 8175800000.

The previous prime is 26980140043. The next prime is 26980140067. The reversal of 26980140066 is 66004108962.

It is not an unprimeable number, because it can be changed into a prime (26980140067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204394935 + ... + 204395066.

It is an arithmetic number, because the mean of its divisors is an integer number (3679110018).

Almost surely, 2^26980140066 is an apocalyptic number.

26980140066 is an abundant number, since it is smaller than the sum of its proper divisors (31885620222).

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

26980140066 is a wasteful number, since it uses less digits than its factorization.

26980140066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408790017.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 26980140066 in words is "twenty-six billion, nine hundred eighty million, one hundred forty thousand, sixty-six".