71039938788 has 96 divisors (see below), whose sum is σ = 226680177920. Its totient is φ = 18735805440.

The previous prime is 71039938787. The next prime is 71039938813. The reversal of 71039938788 is 88783993017.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (71039938787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3604333 + ... + 3623988.

Almost surely, 2^71039938788 is an apocalyptic number.

71039938788 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

71039938788 is an abundant number, since it is smaller than the sum of its proper divisors (155640239132).

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

71039938788 is a wasteful number, since it uses less digits than its factorization.

71039938788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7228354 (or 7228346 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 71039938788 in words is "seventy-one billion, thirty-nine million, nine hundred thirty-eight thousand, seven hundred eighty-eight".