71865214420 has 48 divisors (see below), whose sum is σ = 157894450560. Its totient is φ = 27423639936.

The previous prime is 71865214361. The next prime is 71865214423. The reversal of 71865214420 is 2441256817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71865214423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31767 + ... + 380446.

It is an arithmetic number, because the mean of its divisors is an integer number (3289467720).

Almost surely, 2^71865214420 is an apocalyptic number.

It is an amenable number.

71865214420 is an abundant number, since it is smaller than the sum of its proper divisors (86029236140).

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

71865214420 is a wasteful number, since it uses less digits than its factorization.

71865214420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412624 (or 412622 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 71865214420 in words is "seventy-one billion, eight hundred sixty-five million, two hundred fourteen thousand, four hundred twenty".