71238342852 has 54 divisors (see below), whose sum is σ = 190685003418. Its totient is φ = 22347212544.

The previous prime is 71238342781. The next prime is 71238342871. The reversal of 71238342852 is 25824383217.

71238342852 is a `hidden beast` number, since 71 + 238 + 342 + 8 + 5 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 15972915456 + 55265427396 = 126384^2 + 235086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71238342798 and 71238342807.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6597474 + ... + 6608262.

It is an arithmetic number, because the mean of its divisors is an integer number (3531203767).

Almost surely, 2^71238342852 is an apocalyptic number.

It is an amenable number.

71238342852 is an abundant number, since it is smaller than the sum of its proper divisors (119446660566).

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

71238342852 is a wasteful number, since it uses less digits than its factorization.

71238342852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21605 (or 10811 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 71238342852 in words is "seventy-one billion, two hundred thirty-eight million, three hundred forty-two thousand, eight hundred fifty-two".