7352666561 has 4 divisors (see below), whose sum is σ = 7353174192. Its totient is φ = 7352158932.

The previous prime is 7352666557. The next prime is 7352666593. The reversal of 7352666561 is 1656662537.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7352666561 - 2² = 7352666557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7352666501) 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, 231431 + ... + 261276.

It is an arithmetic number, because the mean of its divisors is an integer number (1838293548).

Almost surely, 2^7352666561 is an apocalyptic number.

It is an amenable number.

7352666561 is a deficient number, since it is larger than the sum of its proper divisors (507631).

7352666561 is a wasteful number, since it uses less digits than its factorization.

7352666561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507630.

The product of its digits is 1360800, while the sum is 47.

The square root of 7352666561 is about 85747.6912867046. The cubic root of 7352666561 is about 1944.5313851338.

The spelling of 7352666561 in words is "seven billion, three hundred fifty-two million, six hundred sixty-six thousand, five hundred sixty-one".