26977077009 has 27 divisors (see below), whose sum is σ = 39754469937. Its totient is φ = 17628302016.

The previous prime is 26977076963. The next prime is 26977077019. The reversal of 26977077009 is 90077077962.

The square root of 26977077009 is 164247.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 14616084609 + 12360992400 = 120897^2 + 111180^2 .

It is not a de Polignac number, because 26977077009 - 2⁷ = 26977076881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26977077019) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26114757 + ... + 26115789.

Almost surely, 2^26977077009 is an apocalyptic number.

26977077009 is the 164247-th square number.

26977077009 is the 82124-th centered octagonal number.

It is an amenable number.

26977077009 is a deficient number, since it is larger than the sum of its proper divisors (12777392928).

26977077009 is an frugal number, since it uses more digits than its factorization.

26977077009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 2333772, while the sum is 54.

The spelling of 26977077009 in words is "twenty-six billion, nine hundred seventy-seven million, seventy-seven thousand, nine".