72214436572 has 24 divisors (see below), whose sum is σ = 126658473984. Its totient is φ = 36026381232.

The previous prime is 72214436557. The next prime is 72214436617. The reversal of 72214436572 is 27563441227.

It is a super-2 number, since 2×72214436572² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4046493 + ... + 4064299.

It is an arithmetic number, because the mean of its divisors is an integer number (5277436416).

Almost surely, 2^72214436572 is an apocalyptic number.

It is an amenable number.

72214436572 is a deficient number, since it is larger than the sum of its proper divisors (54444037412).

72214436572 is a wasteful number, since it uses less digits than its factorization.

72214436572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20025 (or 20023 counting only the distinct ones).

The product of its digits is 564480, while the sum is 43.

Adding to 72214436572 its reverse (27563441227), we get a palindrome (99777877799).

The spelling of 72214436572 in words is "seventy-two billion, two hundred fourteen million, four hundred thirty-six thousand, five hundred seventy-two".