26277669641 has 4 divisors (see below), whose sum is σ = 27823414932. Its totient is φ = 24731924352.

The previous prime is 26277669599. The next prime is 26277669643. The reversal of 26277669641 is 14696677262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14696677262 = 2 ⋅7348338631.

It can be written as a sum of positive squares in 2 ways, for example, as 8634126400 + 17643543241 = 92920^2 + 132829^2 .

It is a cyclic number.

It is not a de Polignac number, because 26277669641 - 2⁶ = 26277669577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26277669643) 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, 772872620 + ... + 772872653.

It is an arithmetic number, because the mean of its divisors is an integer number (6955853733).

Almost surely, 2^26277669641 is an apocalyptic number.

It is an amenable number.

26277669641 is a deficient number, since it is larger than the sum of its proper divisors (1545745291).

26277669641 is a wasteful number, since it uses less digits than its factorization.

26277669641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545745290.

The product of its digits is 9144576, while the sum is 56.

The spelling of 26277669641 in words is "twenty-six billion, two hundred seventy-seven million, six hundred sixty-nine thousand, six hundred forty-one".