26355921001 has 2 divisors, whose sum is σ = 26355921002. Its totient is φ = 26355921000.

The previous prime is 26355920971. The next prime is 26355921017. The reversal of 26355921001 is 10012955362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26219381776 + 136539225 = 161924^2 + 11685^2 .

It is a cyclic number.

It is not a de Polignac number, because 26355921001 - 2⁷ = 26355920873 is a prime.

It is not a weakly prime, because it can be changed into another prime (26355921091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13177960500 + 13177960501.

It is an arithmetic number, because the mean of its divisors is an integer number (13177960501).

Almost surely, 2^26355921001 is an apocalyptic number.

It is an amenable number.

26355921001 is a deficient number, since it is larger than the sum of its proper divisors (1).

26355921001 is an equidigital number, since it uses as much as digits as its factorization.

26355921001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 26355921001 in words is "twenty-six billion, three hundred fifty-five million, nine hundred twenty-one thousand, one".