71320621502 has 16 divisors (see below), whose sum is σ = 115398205440. Its totient is φ = 32863504032.

The previous prime is 71320621469. The next prime is 71320621529. The reversal of 71320621502 is 20512602317.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221502 + ... + 2253377.

It is an arithmetic number, because the mean of its divisors is an integer number (7212387840).

Almost surely, 2^71320621502 is an apocalyptic number.

71320621502 is a deficient number, since it is larger than the sum of its proper divisors (44077583938).

71320621502 is a wasteful number, since it uses less digits than its factorization.

71320621502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475507.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 71320621502 in words is "seventy-one billion, three hundred twenty million, six hundred twenty-one thousand, five hundred two".