72142827322 has 4 divisors (see below), whose sum is σ = 108214240986. Its totient is φ = 36071413660.

The previous prime is 72142827311. The next prime is 72142827401. The reversal of 72142827322 is 22372824127.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65550848841 + 6591978481 = 256029^2 + 81191^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18035706829 + ... + 18035706832.

Almost surely, 2^72142827322 is an apocalyptic number.

72142827322 is a deficient number, since it is larger than the sum of its proper divisors (36071413664).

72142827322 is a wasteful number, since it uses less digits than its factorization.

72142827322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36071413663.

The product of its digits is 150528, while the sum is 40.

The spelling of 72142827322 in words is "seventy-two billion, one hundred forty-two million, eight hundred twenty-seven thousand, three hundred twenty-two".