71820415752 has 32 divisors (see below), whose sum is σ = 182938798080. Its totient is φ = 23488437440.

The previous prime is 71820415747. The next prime is 71820415787. The reversal of 71820415752 is 25751402817.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28230024 + ... + 28232567.

It is an arithmetic number, because the mean of its divisors is an integer number (5716837440).

Almost surely, 2^71820415752 is an apocalyptic number.

It is an amenable number.

71820415752 is an abundant number, since it is smaller than the sum of its proper divisors (111118382328).

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

71820415752 is a wasteful number, since it uses less digits than its factorization.

71820415752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56462653 (or 56462649 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The spelling of 71820415752 in words is "seventy-one billion, eight hundred twenty million, four hundred fifteen thousand, seven hundred fifty-two".