7224657936181 has 32 divisors (see below), whose sum is σ = 8324086906368. Its totient is φ = 6142333317120.

The previous prime is 7224657936173. The next prime is 7224657936187. The reversal of 7224657936181 is 1816397564227.

It is not a de Polignac number, because 7224657936181 - 2³ = 7224657936173 is a prime.

It is a super-2 number, since 2×7224657936181² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7224657936187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376647411 + ... + 376666591.

It is an arithmetic number, because the mean of its divisors is an integer number (260127715824).

Almost surely, 2^{7224657936181} is an apocalyptic number.

It is an amenable number.

7224657936181 is a deficient number, since it is larger than the sum of its proper divisors (1099428970187).

7224657936181 is a wasteful number, since it uses less digits than its factorization.

7224657936181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20341.

The product of its digits is 30481920, while the sum is 61.

The spelling of 7224657936181 in words is "seven trillion, two hundred twenty-four billion, six hundred fifty-seven million, nine hundred thirty-six thousand, one hundred eighty-one".