26871055290 has 32 divisors (see below), whose sum is σ = 71656148160. Its totient is φ = 7165614672.

The previous prime is 26871055259. The next prime is 26871055327. The reversal of 26871055290 is 9255017862.

26871055290 is a `hidden beast` number, since 2 + 6 + 8 + 7 + 1 + 0 + 552 + 90 = 666.

It is a super-2 number, since 2×26871055290² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49760944 + ... + 49761483.

It is an arithmetic number, because the mean of its divisors is an integer number (2239254630).

Almost surely, 2^26871055290 is an apocalyptic number.

26871055290 is an abundant number, since it is smaller than the sum of its proper divisors (44785092870).

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

26871055290 is a wasteful number, since it uses less digits than its factorization.

26871055290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99522443 (or 99522437 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 26871055290 in words is "twenty-six billion, eight hundred seventy-one million, fifty-five thousand, two hundred ninety".