26011972793 has 2 divisors, whose sum is σ = 26011972794. Its totient is φ = 26011972792.

The previous prime is 26011972783. The next prime is 26011972837. The reversal of 26011972793 is 39727911062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19558581904 + 6453390889 = 139852^2 + 80333^2 .

It is a cyclic number.

It is not a de Polignac number, because 26011972793 - 2¹⁸ = 26011710649 is a prime.

It is not a weakly prime, because it can be changed into another prime (26011972783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13005986396 + 13005986397.

It is an arithmetic number, because the mean of its divisors is an integer number (13005986397).

Almost surely, 2^26011972793 is an apocalyptic number.

It is an amenable number.

26011972793 is a deficient number, since it is larger than the sum of its proper divisors (1).

26011972793 is an equidigital number, since it uses as much as digits as its factorization.

26011972793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 47.

The spelling of 26011972793 in words is "twenty-six billion, eleven million, nine hundred seventy-two thousand, seven hundred ninety-three".