26540575577 has 2 divisors, whose sum is σ = 26540575578. Its totient is φ = 26540575576.

The previous prime is 26540575547. The next prime is 26540575603. The reversal of 26540575577 is 77557504562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17330142736 + 9210432841 = 131644^2 + 95971^2 .

It is a cyclic number.

It is not a de Polignac number, because 26540575577 - 2¹² = 26540571481 is a prime.

It is not a weakly prime, because it can be changed into another prime (26540575547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13270287788 + 13270287789.

It is an arithmetic number, because the mean of its divisors is an integer number (13270287789).

Almost surely, 2^26540575577 is an apocalyptic number.

It is an amenable number.

26540575577 is a deficient number, since it is larger than the sum of its proper divisors (1).

26540575577 is an equidigital number, since it uses as much as digits as its factorization.

26540575577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10290000, while the sum is 53.

The spelling of 26540575577 in words is "twenty-six billion, five hundred forty million, five hundred seventy-five thousand, five hundred seventy-seven".