71843651340 has 48 divisors (see below), whose sum is σ = 207651333120. Its totient is φ = 18540296640.

The previous prime is 71843651267. The next prime is 71843651353. The reversal of 71843651340 is 4315634817.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71843651292 and 71843651301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19310950 + ... + 19314669.

It is an arithmetic number, because the mean of its divisors is an integer number (4326069440).

Almost surely, 2^71843651340 is an apocalyptic number.

It is an amenable number.

71843651340 is an abundant number, since it is smaller than the sum of its proper divisors (135807681780).

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

71843651340 is a wasteful number, since it uses less digits than its factorization.

71843651340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38625662 (or 38625660 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 71843651340 in words is "seventy-one billion, eight hundred forty-three million, six hundred fifty-one thousand, three hundred forty".