71428071428 has 48 divisors (see below), whose sum is σ = 144341691648. Its totient is φ = 30294000000.

The previous prime is 71428071409. The next prime is 71428071467. The reversal of 71428071428 is 82417082417.

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, 7209278 + ... + 7219178.

It is an arithmetic number, because the mean of its divisors is an integer number (3007118576).

Almost surely, 2^71428071428 is an apocalyptic number.

It is an amenable number.

71428071428 is an abundant number, since it is smaller than the sum of its proper divisors (72913620220).

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

71428071428 is a wasteful number, since it uses less digits than its factorization.

71428071428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12564 (or 12562 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 71428071428 in words is "seventy-one billion, four hundred twenty-eight million, seventy-one thousand, four hundred twenty-eight".