71034872840 has 64 divisors (see below), whose sum is σ = 161596512000. Its totient is φ = 28101351168.

The previous prime is 71034872819. The next prime is 71034872879. The reversal of 71034872840 is 4827843017.

It is a junction number, because it is equal to n+sod(n) for n = 71034872791 and 71034872800.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1302602 + ... + 1356038.

It is an arithmetic number, because the mean of its divisors is an integer number (2524945500).

Almost surely, 2^71034872840 is an apocalyptic number.

It is an amenable number.

71034872840 is an abundant number, since it is smaller than the sum of its proper divisors (90561639160).

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

71034872840 is a wasteful number, since it uses less digits than its factorization.

71034872840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53814 (or 53810 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 71034872840 in words is "seventy-one billion, thirty-four million, eight hundred seventy-two thousand, eight hundred forty".