26100666517061 has 4 divisors (see below), whose sum is σ = 27635999841612. Its totient is φ = 24565333192512.

The previous prime is 26100666517039. The next prime is 26100666517151. The reversal of 26100666517061 is 16071566600162.

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 11408823513025 + 14691843004036 = 3377695^2 + 3832994^2 .

It is a cyclic number.

It is not a de Polignac number, because 26100666517061 - 2⁶ = 26100666516997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26100666516997 and 26100666517015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26100666517561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767666662250 + ... + 767666662283.

It is an arithmetic number, because the mean of its divisors is an integer number (6908999960403).

Almost surely, 2^{26100666517061} is an apocalyptic number.

It is an amenable number.

26100666517061 is a deficient number, since it is larger than the sum of its proper divisors (1535333324551).

26100666517061 is a wasteful number, since it uses less digits than its factorization.

26100666517061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535333324550.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 26100666517061 in words is "twenty-six trillion, one hundred billion, six hundred sixty-six million, five hundred seventeen thousand, sixty-one".