71099755385 has 16 divisors (see below), whose sum is σ = 85977509184. Its totient is φ = 56442532032.

The previous prime is 71099755379. The next prime is 71099755409. The reversal of 71099755385 is 58355799017.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71099755385 - 2¹⁴ = 71099739001 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 373814 + ... + 530976.

It is an arithmetic number, because the mean of its divisors is an integer number (5373594324).

Almost surely, 2^71099755385 is an apocalyptic number.

It is an amenable number.

71099755385 is a deficient number, since it is larger than the sum of its proper divisors (14877753799).

71099755385 is a wasteful number, since it uses less digits than its factorization.

71099755385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157864.

The product of its (nonzero) digits is 11907000, while the sum is 59.

The spelling of 71099755385 in words is "seventy-one billion, ninety-nine million, seven hundred fifty-five thousand, three hundred eighty-five".