26641664411651 has 4 divisors (see below), whose sum is σ = 26641952874312. Its totient is φ = 26641375948992.

The previous prime is 26641664411599. The next prime is 26641664411671. The reversal of 26641664411651 is 15611446614662.

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

It is a cyclic number.

It is not a de Polignac number, because 26641664411651 - 2¹⁴ = 26641664395267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26641664411593 and 26641664411602.

It is not an unprimeable number, because it can be changed into a prime (26641664411671) 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, 144092750 + ... + 144277523.

It is an arithmetic number, because the mean of its divisors is an integer number (6660488218578).

Almost surely, 2^{26641664411651} is an apocalyptic number.

26641664411651 is a deficient number, since it is larger than the sum of its proper divisors (288462661).

26641664411651 is an equidigital number, since it uses as much as digits as its factorization.

26641664411651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288462660.

The product of its digits is 4976640, while the sum is 53.

The spelling of 26641664411651 in words is "twenty-six trillion, six hundred forty-one billion, six hundred sixty-four million, four hundred eleven thousand, six hundred fifty-one".