26778277452 has 54 divisors (see below), whose sum is σ = 63263342772. Its totient is φ = 8815931136.

The previous prime is 26778277451. The next prime is 26778277469. The reversal of 26778277452 is 25477287762.

It is a super-2 number, since 2×26778277452² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26778277392 and 26778277401.

It is not an unprimeable number, because it can be changed into a prime (26778277451) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 54985953 + ... + 54986439.

Almost surely, 2^26778277452 is an apocalyptic number.

It is an amenable number.

26778277452 is an abundant number, since it is smaller than the sum of its proper divisors (36485065320).

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

26778277452 is an frugal number, since it uses more digits than its factorization.

26778277452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 589 counting only the distinct ones).

The product of its digits is 18439680, while the sum is 57.

The spelling of 26778277452 in words is "twenty-six billion, seven hundred seventy-eight million, two hundred seventy-seven thousand, four hundred fifty-two".