71672358040 has 32 divisors (see below), whose sum is σ = 168274234080. Its totient is φ = 27422467072.

The previous prime is 71672358031. The next prime is 71672358059. The reversal of 71672358040 is 4085327617.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38951449 + ... + 38953288.

It is an arithmetic number, because the mean of its divisors is an integer number (5258569815).

Almost surely, 2^71672358040 is an apocalyptic number.

It is an amenable number.

71672358040 is an abundant number, since it is smaller than the sum of its proper divisors (96601876040).

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

71672358040 is a wasteful number, since it uses less digits than its factorization.

71672358040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77904771 (or 77904767 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 71672358040 in words is "seventy-one billion, six hundred seventy-two million, three hundred fifty-eight thousand, forty".