8061458821 has 8 divisors (see below), whose sum is σ = 8779118040. Its totient is φ = 7357734912.

The previous prime is 8061458819. The next prime is 8061458851. The reversal of 8061458821 is 1288541608.

It can be written as a sum of positive squares in 4 ways, for example, as 195720100 + 7865738721 = 13990^2 + 88689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8061458821 - 2¹ = 8061458819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8061458851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482620 + ... + 3484933.

It is an arithmetic number, because the mean of its divisors is an integer number (1097389755).

Almost surely, 2^8061458821 is an apocalyptic number.

It is an amenable number.

8061458821 is a deficient number, since it is larger than the sum of its proper divisors (717659219).

8061458821 is a wasteful number, since it uses less digits than its factorization.

8061458821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967655.

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 8061458821 is about 89785.6270290518. The cubic root of 8061458821 is about 2005.1085088755.

The spelling of 8061458821 in words is "eight billion, sixty-one million, four hundred fifty-eight thousand, eight hundred twenty-one".