71870970642 has 32 divisors (see below), whose sum is σ = 149060176512. Its totient is φ = 23083190784.

The previous prime is 71870970629. The next prime is 71870970671. The reversal of 71870970642 is 24607907817.

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, 1548703 + ... + 1594434.

It is an arithmetic number, because the mean of its divisors is an integer number (4658130516).

Almost surely, 2^71870970642 is an apocalyptic number.

71870970642 is an abundant number, since it is smaller than the sum of its proper divisors (77189205870).

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

71870970642 is a wasteful number, since it uses less digits than its factorization.

71870970642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143282.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 71870970642 in words is "seventy-one billion, eight hundred seventy million, nine hundred seventy thousand, six hundred forty-two".