26975401984 has 48 divisors (see below), whose sum is σ = 57110508000. Its totient is φ = 12694290432.

The previous prime is 26975401939. The next prime is 26975401987. The reversal of 26975401984 is 48910457962.

It is a super-2 number, since 2×26975401984² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26975401987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352584 + ... + 422215.

It is an arithmetic number, because the mean of its divisors is an integer number (1189802250).

Almost surely, 2^26975401984 is an apocalyptic number.

It is an amenable number.

26975401984 is an abundant number, since it is smaller than the sum of its proper divisors (30135106016).

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

26975401984 is an equidigital number, since it uses as much as digits as its factorization.

26975401984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774838 (or 774818 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 26975401984 in words is "twenty-six billion, nine hundred seventy-five million, four hundred one thousand, nine hundred eighty-four".