71225192738 has 18 divisors (see below), whose sum is σ = 124285303611. Its totient is φ = 30523950324.

The previous prime is 71225192737. The next prime is 71225192761. The reversal of 71225192738 is 83729152217.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35612596369 + 35612596369 = 188713^2 + 188713^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188713.

It is a junction number, because it is equal to n+sod(n) for n = 71225192692 and 71225192701.

It is not an unprimeable number, because it can be changed into a prime (71225192737) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2628503 + ... + 2655461.

Almost surely, 2^71225192738 is an apocalyptic number.

71225192738 is a deficient number, since it is larger than the sum of its proper divisors (53060110873).

71225192738 is an frugal number, since it uses more digits than its factorization.

71225192738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53934 (or 26968 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The spelling of 71225192738 in words is "seventy-one billion, two hundred twenty-five million, one hundred ninety-two thousand, seven hundred thirty-eight".