71177505072 has 40 divisors (see below), whose sum is σ = 185941246320. Its totient is φ = 23459251200.

The previous prime is 71177505011. The next prime is 71177505089. The reversal of 71177505072 is 27050577117.

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, 8326429 + ... + 8334972.

It is an arithmetic number, because the mean of its divisors is an integer number (4648531158).

Almost surely, 2^71177505072 is an apocalyptic number.

It is an amenable number.

71177505072 is an abundant number, since it is smaller than the sum of its proper divisors (114763741248).

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

71177505072 is a wasteful number, since it uses less digits than its factorization.

71177505072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16661501 (or 16661495 counting only the distinct ones).

The product of its (nonzero) digits is 120050, while the sum is 42.

The spelling of 71177505072 in words is "seventy-one billion, one hundred seventy-seven million, five hundred five thousand, seventy-two".