71328124168540 has 24 divisors (see below), whose sum is σ = 150743131211232. Its totient is φ = 28349521961280.

The previous prime is 71328124168519. The next prime is 71328124168547. The reversal of 71328124168540 is 4586142182317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71328124168547) 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, 11357978416 + ... + 11357984695.

It is an arithmetic number, because the mean of its divisors is an integer number (6280963800468).

Almost surely, 2^{71328124168540} is an apocalyptic number.

It is an amenable number.

71328124168540 is an abundant number, since it is smaller than the sum of its proper divisors (79415007042692).

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

71328124168540 is a wasteful number, since it uses less digits than its factorization.

71328124168540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22715963277 (or 22715963275 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 71328124168540 in words is "seventy-one trillion, three hundred twenty-eight billion, one hundred twenty-four million, one hundred sixty-eight thousand, five hundred forty".