26615948011 has 4 divisors (see below), whose sum is σ = 28016787400. Its totient is φ = 25215108624.

The previous prime is 26615948003. The next prime is 26615948027. The reversal of 26615948011 is 11084951662.

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 26615948011 - 2³ = 26615948003 is a prime.

It is a super-2 number, since 2×26615948011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26615948911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700419666 + ... + 700419703.

It is an arithmetic number, because the mean of its divisors is an integer number (7004196850).

Almost surely, 2^26615948011 is an apocalyptic number.

26615948011 is a deficient number, since it is larger than the sum of its proper divisors (1400839389).

26615948011 is a wasteful number, since it uses less digits than its factorization.

26615948011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400839388.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 26615948011 in words is "twenty-six billion, six hundred fifteen million, nine hundred forty-eight thousand, eleven".