71109278090 has 8 divisors (see below), whose sum is σ = 127996700580. Its totient is φ = 28443711232.

The previous prime is 71109278057. The next prime is 71109278137. The reversal of 71109278090 is 9087290117.

It can be written as a sum of positive squares in 2 ways, for example, as 65138779729 + 5970498361 = 255223^2 + 77269^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 3555463895 + ... + 3555463914.

Almost surely, 2^71109278090 is an apocalyptic number.

71109278090 is a deficient number, since it is larger than the sum of its proper divisors (56887422490).

71109278090 is a wasteful number, since it uses less digits than its factorization.

71109278090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110927816.

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 71109278090 in words is "seventy-one billion, one hundred nine million, two hundred seventy-eight thousand, ninety".