7471218061 has 4 divisors (see below), whose sum is σ = 7728846300. Its totient is φ = 7213589824.

The previous prime is 7471218037. The next prime is 7471218101. The reversal of 7471218061 is 1608121747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1608121747 = 283 ⋅5682409.

It can be written as a sum of positive squares in 2 ways, for example, as 3720268036 + 3750950025 = 60994^2 + 61245^2 .

It is a cyclic number.

It is not a de Polignac number, because 7471218061 - 2⁹ = 7471217549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7471218061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7471218011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128814076 + ... + 128814133.

It is an arithmetic number, because the mean of its divisors is an integer number (1932211575).

Almost surely, 2^7471218061 is an apocalyptic number.

It is an amenable number.

7471218061 is a deficient number, since it is larger than the sum of its proper divisors (257628239).

7471218061 is a wasteful number, since it uses less digits than its factorization.

7471218061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257628238.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 7471218061 is about 86436.2080438516. The cubic root of 7471218061 is about 1954.9266666632.

The spelling of 7471218061 in words is "seven billion, four hundred seventy-one million, two hundred eighteen thousand, sixty-one".