71532145628 has 24 divisors (see below), whose sum is σ = 125716074624. Its totient is φ = 35613350000.

The previous prime is 71532145627. The next prime is 71532145631. The reversal of 71532145628 is 82654123517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71532145627) 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, 4460801 + ... + 4476807.

It is an arithmetic number, because the mean of its divisors is an integer number (5238169776).

Almost surely, 2^71532145628 is an apocalyptic number.

It is an amenable number.

71532145628 is a deficient number, since it is larger than the sum of its proper divisors (54183928996).

71532145628 is a wasteful number, since it uses less digits than its factorization.

71532145628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20713 (or 20711 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The spelling of 71532145628 in words is "seventy-one billion, five hundred thirty-two million, one hundred forty-five thousand, six hundred twenty-eight".