26528972801 has 2 divisors, whose sum is σ = 26528972802. Its totient is φ = 26528972800.

The previous prime is 26528972791. The next prime is 26528972807. The reversal of 26528972801 is 10827982562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24585926401 + 1943046400 = 156799^2 + 44080^2 .

It is a cyclic number.

It is not a de Polignac number, because 26528972801 - 2¹⁸ = 26528710657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26528972801.

It is not a weakly prime, because it can be changed into another prime (26528972807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13264486400 + 13264486401.

It is an arithmetic number, because the mean of its divisors is an integer number (13264486401).

It is a Proth number, since it is equal to 6325 ⋅ 2²² + 1 and 6325 < 2²².

Almost surely, 2^26528972801 is an apocalyptic number.

It is an amenable number.

26528972801 is a deficient number, since it is larger than the sum of its proper divisors (1).

26528972801 is an equidigital number, since it uses as much as digits as its factorization.

26528972801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 26528972801 in words is "twenty-six billion, five hundred twenty-eight million, nine hundred seventy-two thousand, eight hundred one".