7212144845 has 16 divisors (see below), whose sum is σ = 9033707520. Its totient is φ = 5517118464.

The previous prime is 7212144833. The next prime is 7212144853. The reversal of 7212144845 is 5484412127.

It is a cyclic number.

It is not a de Polignac number, because 7212144845 - 2¹⁰ = 7212143821 is a prime.

It is a super-4 number, since 4×7212144845⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7212144799 and 7212144808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448301 + ... + 464109.

It is an arithmetic number, because the mean of its divisors is an integer number (564606720).

Almost surely, 2^7212144845 is an apocalyptic number.

It is an amenable number.

7212144845 is a deficient number, since it is larger than the sum of its proper divisors (1821562675).

7212144845 is a wasteful number, since it uses less digits than its factorization.

7212144845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19804.

The product of its digits is 71680, while the sum is 38.

The square root of 7212144845 is about 84924.3477749461. The cubic root of 7212144845 is about 1932.0638740426.

The spelling of 7212144845 in words is "seven billion, two hundred twelve million, one hundred forty-four thousand, eight hundred forty-five".