26458663145 has 4 divisors (see below), whose sum is σ = 31750395780. Its totient is φ = 21166930512.

The previous prime is 26458663141. The next prime is 26458663151. The reversal of 26458663145 is 54136685462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6608389264 + 19850273881 = 81292^2 + 140891^2 .

It is a cyclic number.

It is not a de Polignac number, because 26458663145 - 2² = 26458663141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26458663093 and 26458663102.

It is not an unprimeable number, because it can be changed into a prime (26458663141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645866310 + ... + 2645866319.

It is an arithmetic number, because the mean of its divisors is an integer number (7937598945).

Almost surely, 2^26458663145 is an apocalyptic number.

It is an amenable number.

26458663145 is a deficient number, since it is larger than the sum of its proper divisors (5291732635).

26458663145 is an equidigital number, since it uses as much as digits as its factorization.

26458663145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291732634.

The product of its digits is 4147200, while the sum is 50.

The spelling of 26458663145 in words is "twenty-six billion, four hundred fifty-eight million, six hundred sixty-three thousand, one hundred forty-five".