26613612005 has 8 divisors (see below), whose sum is σ = 31953506424. Its totient is φ = 21279441600.

The previous prime is 26613611993. The next prime is 26613612023. The reversal of 26613612005 is 50021631662.

It can be written as a sum of positive squares in 4 ways, for example, as 362483521 + 26251128484 = 19039^2 + 162022^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-26613612005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420766 + ... + 1439375.

It is an arithmetic number, because the mean of its divisors is an integer number (3994188303).

Almost surely, 2^26613612005 is an apocalyptic number.

It is an amenable number.

26613612005 is a deficient number, since it is larger than the sum of its proper divisors (5339894419).

26613612005 is a wasteful number, since it uses less digits than its factorization.

26613612005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862007.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 26613612005 in words is "twenty-six billion, six hundred thirteen million, six hundred twelve thousand, five".