71703556028 has 12 divisors (see below), whose sum is σ = 135133624920. Its totient is φ = 33093948912.

The previous prime is 71703556021. The next prime is 71703556051. The reversal of 71703556028 is 82065530717.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71703556028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71703556021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689457218 + ... + 689457321.

It is an arithmetic number, because the mean of its divisors is an integer number (11261135410).

Almost surely, 2^71703556028 is an apocalyptic number.

It is an amenable number.

71703556028 is a deficient number, since it is larger than the sum of its proper divisors (63430068892).

71703556028 is a wasteful number, since it uses less digits than its factorization.

71703556028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378914556 (or 1378914554 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 71703556028 in words is "seventy-one billion, seven hundred three million, five hundred fifty-six thousand, twenty-eight".