7452846721 has 4 divisors (see below), whose sum is σ = 7472006100. Its totient is φ = 7433687344.

The previous prime is 7452846719. The next prime is 7452846727. The reversal of 7452846721 is 1276482547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1276482547 = 313 ⋅4078219.

It can be written as a sum of positive squares in 2 ways, for example, as 1477556721 + 5975290000 = 38439^2 + 77300^2 .

It is a cyclic number.

It is not a de Polignac number, because 7452846721 - 2¹ = 7452846719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7452846727) 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, 9579106 + ... + 9579883.

It is an arithmetic number, because the mean of its divisors is an integer number (1868001525).

Almost surely, 2^7452846721 is an apocalyptic number.

It is an amenable number.

7452846721 is a deficient number, since it is larger than the sum of its proper divisors (19159379).

7452846721 is a wasteful number, since it uses less digits than its factorization.

7452846721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19159378.

The product of its digits is 752640, while the sum is 46.

The square root of 7452846721 is about 86329.8715451378. The cubic root of 7452846721 is about 1953.3229968708.

The spelling of 7452846721 in words is "seven billion, four hundred fifty-two million, eight hundred forty-six thousand, seven hundred twenty-one".