71712140328 has 24 divisors (see below), whose sum is σ = 194220380250. Its totient is φ = 23904046752.

The previous prime is 71712140327. The next prime is 71712140341. The reversal of 71712140328 is 82304121717.

It can be written as a sum of positive squares in only one way, i.e., 63452602404 + 8259537924 = 251898^2 + 90882^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 71712140292 and 71712140301.

It is not an unprimeable number, because it can be changed into a prime (71712140327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 498000903 + ... + 498001046.

Almost surely, 2^71712140328 is an apocalyptic number.

It is an amenable number.

71712140328 is an abundant number, since it is smaller than the sum of its proper divisors (122508239922).

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

71712140328 is a wasteful number, since it uses less digits than its factorization.

71712140328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996001961 (or 996001954 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 71712140328 in words is "seventy-one billion, seven hundred twelve million, one hundred forty thousand, three hundred twenty-eight".