71021835372 has 24 divisors (see below), whose sum is σ = 165731107696. Its totient is φ = 23672017728.

The previous prime is 71021835347. The next prime is 71021835377. The reversal of 71021835372 is 27353812017.

It is a self number, because there is not a number n which added to its sum of digits gives 71021835372.

It is not an unprimeable number, because it can be changed into a prime (71021835377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83263 + ... + 385974.

Almost surely, 2^71021835372 is an apocalyptic number.

It is an amenable number.

71021835372 is an abundant number, since it is smaller than the sum of its proper divisors (94709272324).

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

71021835372 is a wasteful number, since it uses less digits than its factorization.

71021835372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481857 (or 481855 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 71021835372 in words is "seventy-one billion, twenty-one million, eight hundred thirty-five thousand, three hundred seventy-two".