7468867821 has 16 divisors (see below), whose sum is σ = 10103724864. Its totient is φ = 4907111424.

The previous prime is 7468867811. The next prime is 7468867853. The reversal of 7468867821 is 1287688647.

It is a happy number.

It is not a de Polignac number, because 7468867821 - 2⁹ = 7468867309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7468867811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1675 + ... + 122231.

It is an arithmetic number, because the mean of its divisors is an integer number (631482804).

Almost surely, 2^7468867821 is an apocalyptic number.

It is an amenable number.

7468867821 is a deficient number, since it is larger than the sum of its proper divisors (2634857043).

7468867821 is a wasteful number, since it uses less digits than its factorization.

7468867821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120860.

The product of its digits is 7225344, while the sum is 57.

The square root of 7468867821 is about 86422.6117460008. The cubic root of 7468867821 is about 1954.7216564195.

The spelling of 7468867821 in words is "seven billion, four hundred sixty-eight million, eight hundred sixty-seven thousand, eight hundred twenty-one".