72272132386 has 4 divisors (see below), whose sum is σ = 108408198582. Its totient is φ = 36136066192.

The previous prime is 72272132327. The next prime is 72272132393. The reversal of 72272132386 is 68323127227.

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., 63570041161 + 8702091225 = 252131^2 + 93285^2 .

It is a super-2 number, since 2×72272132386² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18068033095 + ... + 18068033098.

Almost surely, 2^72272132386 is an apocalyptic number.

72272132386 is a deficient number, since it is larger than the sum of its proper divisors (36136066196).

72272132386 is a wasteful number, since it uses less digits than its factorization.

72272132386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36136066195.

The product of its digits is 338688, while the sum is 43.

The spelling of 72272132386 in words is "seventy-two billion, two hundred seventy-two million, one hundred thirty-two thousand, three hundred eighty-six".