71639178903 has 12 divisors (see below), whose sum is σ = 105680491488. Its totient is φ = 46743293760.

The previous prime is 71639178869. The next prime is 71639178929. The reversal of 71639178903 is 30987193617.

It is not a de Polignac number, because 71639178903 - 2²⁴ = 71622401687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71639178903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71639178973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84679458 + ... + 84680303.

It is an arithmetic number, because the mean of its divisors is an integer number (8806707624).

Almost surely, 2^71639178903 is an apocalyptic number.

71639178903 is a deficient number, since it is larger than the sum of its proper divisors (34041312585).

71639178903 is a wasteful number, since it uses less digits than its factorization.

71639178903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169359814 (or 169359811 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 71639178903 in words is "seventy-one billion, six hundred thirty-nine million, one hundred seventy-eight thousand, nine hundred three".