7480668081 has 4 divisors (see below), whose sum is σ = 9974224112. Its totient is φ = 4987112052.

The previous prime is 7480668043. The next prime is 7480668089. The reversal of 7480668081 is 1808660847.

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 not a de Polignac number, because 7480668081 - 2²⁵ = 7447113649 is a prime.

It is a super-2 number, since 2×7480668081² (a number of 21 digits) contains 22 as substring.

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 7480668081.

It is not an unprimeable number, because it can be changed into a prime (7480668089) 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, 1246778011 + ... + 1246778016.

It is an arithmetic number, because the mean of its divisors is an integer number (2493556028).

Almost surely, 2^7480668081 is an apocalyptic number.

It is an amenable number.

7480668081 is a deficient number, since it is larger than the sum of its proper divisors (2493556031).

7480668081 is a wasteful number, since it uses less digits than its factorization.

7480668081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493556030.

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 7480668081 is about 86490.8554761716. The cubic root of 7480668081 is about 1955.7505534060.

The spelling of 7480668081 in words is "seven billion, four hundred eighty million, six hundred sixty-eight thousand, eighty-one".