71351682840 has 128 divisors (see below), whose sum is σ = 248179852800. Its totient is φ = 18199843200.

The previous prime is 71351682839. The next prime is 71351682869. The reversal of 71351682840 is 4828615317.

71351682840 is a `hidden beast` number, since 7 + 13 + 516 + 82 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1411386 + ... + 1461065.

It is an arithmetic number, because the mean of its divisors is an integer number (1938905100).

Almost surely, 2^71351682840 is an apocalyptic number.

It is an amenable number.

71351682840 is an abundant number, since it is smaller than the sum of its proper divisors (176828169960).

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

71351682840 is a wasteful number, since it uses less digits than its factorization.

71351682840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872494 (or 2872484 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 71351682840 in words is "seventy-one billion, three hundred fifty-one million, six hundred eighty-two thousand, eight hundred forty".