26121608701 has 2 divisors, whose sum is σ = 26121608702. Its totient is φ = 26121608700.

The previous prime is 26121608693. The next prime is 26121608717. The reversal of 26121608701 is 10780612162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19916265625 + 6205343076 = 141125^2 + 78774^2 .

It is a cyclic number.

It is not a de Polignac number, because 26121608701 - 2³ = 26121608693 is a prime.

It is a super-3 number, since 3×26121608701³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26121608731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13060804350 + 13060804351.

It is an arithmetic number, because the mean of its divisors is an integer number (13060804351).

Almost surely, 2^26121608701 is an apocalyptic number.

It is an amenable number.

26121608701 is a deficient number, since it is larger than the sum of its proper divisors (1).

26121608701 is an equidigital number, since it uses as much as digits as its factorization.

26121608701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 26121608701 in words is "twenty-six billion, one hundred twenty-one million, six hundred eight thousand, seven hundred one".