26671589525557 has 8 divisors (see below), whose sum is σ = 27400245322112. Its totient is φ = 25943344362000.

The previous prime is 26671589525527. The next prime is 26671589525561. The reversal of 26671589525557 is 75552598517662.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26671589525557 is a prime.

It is a super-2 number, since 2×26671589525557² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26671589525557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26671589525527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102526569 + ... + 102786382.

It is an arithmetic number, because the mean of its divisors is an integer number (3425030665264).

Almost surely, 2^{26671589525557} is an apocalyptic number.

It is an amenable number.

26671589525557 is a deficient number, since it is larger than the sum of its proper divisors (728655796555).

26671589525557 is a wasteful number, since it uses less digits than its factorization.

26671589525557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205316499.

The product of its digits is 1587600000, while the sum is 73.

The spelling of 26671589525557 in words is "twenty-six trillion, six hundred seventy-one billion, five hundred eighty-nine million, five hundred twenty-five thousand, five hundred fifty-seven".