26100742666 has 4 divisors (see below), whose sum is σ = 39151114002. Its totient is φ = 13050371332.

The previous prime is 26100742663. The next prime is 26100742691. The reversal of 26100742666 is 66624700162.

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

It can be written as a sum of positive squares in only one way, i.e., 25943867041 + 156875625 = 161071^2 + 12525^2 .

It is a super-3 number, since 3×26100742666³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (26100742663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6525185665 + ... + 6525185668.

Almost surely, 2^26100742666 is an apocalyptic number.

26100742666 is a deficient number, since it is larger than the sum of its proper divisors (13050371336).

26100742666 is a wasteful number, since it uses less digits than its factorization.

26100742666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13050371335.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 26100742666 in words is "twenty-six billion, one hundred million, seven hundred forty-two thousand, six hundred sixty-six".