7215523275172 has 12 divisors (see below), whose sum is σ = 12627190353456. Its totient is φ = 3607754602760.

The previous prime is 7215523275113. The next prime is 7215523275263. The reversal of 7215523275172 is 2715723255127.

It is a super-2 number, since 2×7215523275172² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046103 + ... + 3940225.

It is an arithmetic number, because the mean of its divisors is an integer number (1052265862788).

Almost surely, 2^{7215523275172} is an apocalyptic number.

It is an amenable number.

7215523275172 is a deficient number, since it is larger than the sum of its proper divisors (5411667078284).

7215523275172 is a wasteful number, since it uses less digits than its factorization.

7215523275172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517418 (or 3517416 counting only the distinct ones).

The product of its digits is 2058000, while the sum is 49.

The spelling of 7215523275172 in words is "seven trillion, two hundred fifteen billion, five hundred twenty-three million, two hundred seventy-five thousand, one hundred seventy-two".