26861855558878 has 8 divisors (see below), whose sum is σ = 40295155366872. Its totient is φ = 13430137103256.

The previous prime is 26861855558851. The next prime is 26861855558897. The reversal of 26861855558878 is 87885555816862.

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

It is a super-3 number, since 3×26861855558878³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395295625 + ... + 395363572.

It is an arithmetic number, because the mean of its divisors is an integer number (5036894420859).

Almost surely, 2^{26861855558878} is an apocalyptic number.

26861855558878 is a deficient number, since it is larger than the sum of its proper divisors (13433299807994).

26861855558878 is a wasteful number, since it uses less digits than its factorization.

26861855558878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790676186.

The product of its digits is 10321920000, while the sum is 82.

The spelling of 26861855558878 in words is "twenty-six trillion, eight hundred sixty-one billion, eight hundred fifty-five million, five hundred fifty-eight thousand, eight hundred seventy-eight".