26021205953 has 2 divisors, whose sum is σ = 26021205954. Its totient is φ = 26021205952.

The previous prime is 26021205949. The next prime is 26021205979. The reversal of 26021205953 is 35950212062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26020270864 + 935089 = 161308^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 26021205953 - 2² = 26021205949 is a prime.

It is not a weakly prime, because it can be changed into another prime (26021205943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13010602976 + 13010602977.

It is an arithmetic number, because the mean of its divisors is an integer number (13010602977).

Almost surely, 2^26021205953 is an apocalyptic number.

It is an amenable number.

26021205953 is a deficient number, since it is larger than the sum of its proper divisors (1).

26021205953 is an equidigital number, since it uses as much as digits as its factorization.

26021205953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 26021205953 in words is "twenty-six billion, twenty-one million, two hundred five thousand, nine hundred fifty-three".