71230306602 has 64 divisors (see below), whose sum is σ = 175564005120. Its totient is φ = 18761601024.

The previous prime is 71230306583. The next prime is 71230306603. The reversal of 71230306602 is 20660303217.

It is a super-2 number, since 2×71230306602² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71230306602.

It is not an unprimeable number, because it can be changed into a prime (71230306603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337674 + ... + 506442.

It is an arithmetic number, because the mean of its divisors is an integer number (2743187580).

Almost surely, 2^71230306602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71230306602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87782002560).

71230306602 is an abundant number, since it is smaller than the sum of its proper divisors (104333698518).

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

71230306602 is a wasteful number, since it uses less digits than its factorization.

71230306602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169567.

The product of its (nonzero) digits is 9072, while the sum is 30.

Adding to 71230306602 its reverse (20660303217), we get a palindrome (91890609819).

The spelling of 71230306602 in words is "seventy-one billion, two hundred thirty million, three hundred six thousand, six hundred two".