871539477772 has 12 divisors (see below), whose sum is σ = 1532422495576. Its totient is φ = 433704479040.

The previous prime is 871539477737. The next prime is 871539477791. The reversal of 871539477772 is 277774935178.

871539477772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×871539477772² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 871539477698 and 871539477707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516314013 + ... + 516315700.

Almost surely, 2^871539477772 is an apocalyptic number.

It is an amenable number.

871539477772 is a deficient number, since it is larger than the sum of its proper divisors (660883017804).

871539477772 is a wasteful number, since it uses less digits than its factorization.

871539477772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032629928 (or 1032629926 counting only the distinct ones).

The product of its digits is 145212480, while the sum is 67.

The spelling of 871539477772 in words is "eight hundred seventy-one billion, five hundred thirty-nine million, four hundred seventy-seven thousand, seven hundred seventy-two".