26858803781958 has 32 divisors (see below), whose sum is σ = 56549434156800. Its totient is φ = 8481039896736.

The previous prime is 26858803781911. The next prime is 26858803781969. The reversal of 26858803781958 is 85918730885862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8136913 + ... + 10951116.

It is an arithmetic number, because the mean of its divisors is an integer number (1767169817400).

Almost surely, 2^{26858803781958} is an apocalyptic number.

26858803781958 is an abundant number, since it is smaller than the sum of its proper divisors (29690630374842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26858803781958 is a wasteful number, since it uses less digits than its factorization.

26858803781958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19100396.

The product of its (nonzero) digits is 1857945600, while the sum is 78.

The spelling of 26858803781958 in words is "twenty-six trillion, eight hundred fifty-eight billion, eight hundred three million, seven hundred eighty-one thousand, nine hundred fifty-eight".