26978069508 has 48 divisors (see below), whose sum is σ = 68719719936. Its totient is φ = 8187229440.

The previous prime is 26978069507. The next prime is 26978069519. The reversal of 26978069508 is 80596087962.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26978069507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1173108 + ... + 1195883.

It is an arithmetic number, because the mean of its divisors is an integer number (1431660832).

Almost surely, 2^26978069508 is an apocalyptic number.

It is an amenable number.

26978069508 is an abundant number, since it is smaller than the sum of its proper divisors (41741650428).

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

26978069508 is a wasteful number, since it uses less digits than its factorization.

26978069508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369084 (or 2369082 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 26978069508 in words is "twenty-six billion, nine hundred seventy-eight million, sixty-nine thousand, five hundred eight".