71320617770 has 32 divisors (see below), whose sum is σ = 132205651200. Its totient is φ = 27689702976.

The previous prime is 71320617757. The next prime is 71320617773. The reversal of 71320617770 is 7771602317.

It is not an unprimeable number, because it can be changed into a prime (71320617773) 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, 718469 + ... + 811688.

It is an arithmetic number, because the mean of its divisors is an integer number (4131426600).

Almost surely, 2^71320617770 is an apocalyptic number.

71320617770 is a deficient number, since it is larger than the sum of its proper divisors (60885033430).

71320617770 is a wasteful number, since it uses less digits than its factorization.

71320617770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530302.

The product of its (nonzero) digits is 86436, while the sum is 41.

The spelling of 71320617770 in words is "seventy-one billion, three hundred twenty million, six hundred seventeen thousand, seven hundred seventy".