26827972145 has 16 divisors (see below), whose sum is σ = 34795180560. Its totient is φ = 19739890944.

The previous prime is 26827972139. The next prime is 26827972151. The reversal of 26827972145 is 54127972862.

It is an interprime number because it is at equal distance from previous prime (26827972139) and next prime (26827972151).

It can be written as a sum of positive squares in 8 ways, for example, as 6093988096 + 20733984049 = 78064^2 + 143993^2 .

It is a cyclic number.

It is not a de Polignac number, because 26827972145 - 2¹² = 26827968049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727010 + ... + 763019.

It is an arithmetic number, because the mean of its divisors is an integer number (2174698785).

Almost surely, 2^26827972145 is an apocalyptic number.

It is an amenable number.

26827972145 is a deficient number, since it is larger than the sum of its proper divisors (7967208415).

26827972145 is a wasteful number, since it uses less digits than its factorization.

26827972145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490324.

The product of its digits is 3386880, while the sum is 53.

The spelling of 26827972145 in words is "twenty-six billion, eight hundred twenty-seven million, nine hundred seventy-two thousand, one hundred forty-five".