7215273134345 has 16 divisors (see below), whose sum is σ = 8664611062800. Its totient is φ = 5768030822400.

The previous prime is 7215273134341. The next prime is 7215273134387. The reversal of 7215273134345 is 5434313725127.

It can be written as a sum of positive squares in 8 ways, for example, as 2521477223056 + 4693795911289 = 1587916^2 + 2166517^2 .

It is not a de Polignac number, because 7215273134345 - 2² = 7215273134341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7215273134345.

It is not an unprimeable number, because it can be changed into a prime (7215273134341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51302681 + ... + 51443129.

It is an arithmetic number, because the mean of its divisors is an integer number (541538191425).

Almost surely, 2^{7215273134345} is an apocalyptic number.

It is an amenable number.

7215273134345 is a deficient number, since it is larger than the sum of its proper divisors (1449337928455).

7215273134345 is a wasteful number, since it uses less digits than its factorization.

7215273134345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147836.

The product of its digits is 2116800, while the sum is 47.

The spelling of 7215273134345 in words is "seven trillion, two hundred fifteen billion, two hundred seventy-three million, one hundred thirty-four thousand, three hundred forty-five".