71642453852 has 12 divisors (see below), whose sum is σ = 127245552840. Its totient is φ = 35286581616.

The previous prime is 71642453849. The next prime is 71642453879. The reversal of 71642453852 is 25835424617.

It is a junction number, because it is equal to n+sod(n) for n = 71642453797 and 71642453806.

It is a congruent number.

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, 133661027 + ... + 133661562.

It is an arithmetic number, because the mean of its divisors is an integer number (10603796070).

Almost surely, 2^71642453852 is an apocalyptic number.

It is an amenable number.

71642453852 is a deficient number, since it is larger than the sum of its proper divisors (55603098988).

71642453852 is a wasteful number, since it uses less digits than its factorization.

71642453852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267322660 (or 267322658 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The spelling of 71642453852 in words is "seventy-one billion, six hundred forty-two million, four hundred fifty-three thousand, eight hundred fifty-two".