7346544721 has 4 divisors (see below), whose sum is σ = 7435057392. Its totient is φ = 7258032052.

The previous prime is 7346544643. The next prime is 7346544739. The reversal of 7346544721 is 1274456437.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1274456437 = 20233 ⋅62989.

It is a cyclic number.

It is not a de Polignac number, because 7346544721 - 2⁷ = 7346544593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7346544221) 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, 44256211 + ... + 44256376.

It is an arithmetic number, because the mean of its divisors is an integer number (1858764348).

Almost surely, 2^7346544721 is an apocalyptic number.

It is an amenable number.

7346544721 is a deficient number, since it is larger than the sum of its proper divisors (88512671).

7346544721 is an equidigital number, since it uses as much as digits as its factorization.

7346544721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88512670.

The product of its digits is 564480, while the sum is 43.

The square root of 7346544721 is about 85711.9870321532. The cubic root of 7346544721 is about 1943.9915621441.

The spelling of 7346544721 in words is "seven billion, three hundred forty-six million, five hundred forty-four thousand, seven hundred twenty-one".