71020613671 has 12 divisors (see below), whose sum is σ = 83387932488. Its totient is φ = 60305883792.

The previous prime is 71020613623. The next prime is 71020613681. The reversal of 71020613671 is 17631602017.

It is not a de Polignac number, because 71020613671 - 2²⁹ = 70483742759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71020613681) 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, 6767656 + ... + 6778141.

It is an arithmetic number, because the mean of its divisors is an integer number (6948994374).

Almost surely, 2^71020613671 is an apocalyptic number.

71020613671 is a deficient number, since it is larger than the sum of its proper divisors (12367318817).

71020613671 is a wasteful number, since it uses less digits than its factorization.

71020613671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13545918 (or 13545911 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The spelling of 71020613671 in words is "seventy-one billion, twenty million, six hundred thirteen thousand, six hundred seventy-one".