26785558997538 has 48 divisors (see below), whose sum is σ = 59881989394080. Its totient is φ = 7979262554560.

The previous prime is 26785558997419. The next prime is 26785558997563. The reversal of 26785558997538 is 83579985558762.

It is a super-2 number, since 2×26785558997538² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312624195 + ... + 312709862.

It is an arithmetic number, because the mean of its divisors is an integer number (1247541445710).

Almost surely, 2^{26785558997538} is an apocalyptic number.

26785558997538 is an abundant number, since it is smaller than the sum of its proper divisors (33096430396542).

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

26785558997538 is a wasteful number, since it uses less digits than its factorization.

26785558997538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625334143 (or 625334132 counting only the distinct ones).

The product of its digits is 45722880000, while the sum is 87.

The spelling of 26785558997538 in words is "twenty-six trillion, seven hundred eighty-five billion, five hundred fifty-eight million, nine hundred ninety-seven thousand, five hundred thirty-eight".