7218260169124 has 9 divisors (see below), whose sum is σ = 12631964699361. Its totient is φ = 3609127397880.

The previous prime is 7218260169089. The next prime is 7218260169229. The reversal of 7218260169124 is 4219610628127.

The square root of 7218260169124 is 2686682.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3879047524 + 7214381121600 = 62282^2 + 2685960^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4701694 + ... + 6045034.

Almost surely, 2^{7218260169124} is an apocalyptic number.

7218260169124 is the 2686682-nd square number.

It is an amenable number.

7218260169124 is a deficient number, since it is larger than the sum of its proper divisors (5413704530237).

7218260169124 is an frugal number, since it uses more digits than its factorization.

7218260169124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686686 (or 1343343 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

Multiplying 7218260169124 by its sum of digits (49), we get a square (353694748287076 = 18806774²).

The spelling of 7218260169124 in words is "seven trillion, two hundred eighteen billion, two hundred sixty million, one hundred sixty-nine thousand, one hundred twenty-four".