26981194877952 has 176 divisors, whose sum is σ = 82209847226112. Its totient is φ = 7706887372800.

The previous prime is 26981194877929. The next prime is 26981194877999. The reversal of 26981194877952 is 25977849118962.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 82648998 + ... + 82974810.

Almost surely, 2^{26981194877952} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26981194877952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41104923613056).

26981194877952 is an abundant number, since it is smaller than the sum of its proper divisors (55228652348160).

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

26981194877952 is a wasteful number, since it uses less digits than its factorization.

26981194877952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329694 (or 329676 counting only the distinct ones).

The product of its digits is 1097349120, while the sum is 78.

The spelling of 26981194877952 in words is "twenty-six trillion, nine hundred eighty-one billion, one hundred ninety-four million, eight hundred seventy-seven thousand, nine hundred fifty-two".