8461741821 has 16 divisors (see below), whose sum is σ = 12168836736. Its totient is φ = 5199235776.

The previous prime is 8461741807. The next prime is 8461741853. The reversal of 8461741821 is 1281471648.

It is not a de Polignac number, because 8461741821 - 2⁷ = 8461741693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461741801) 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, 140665 + ... + 191598.

It is an arithmetic number, because the mean of its divisors is an integer number (760552296).

Almost surely, 2^8461741821 is an apocalyptic number.

It is an amenable number.

8461741821 is a deficient number, since it is larger than the sum of its proper divisors (3707094915).

8461741821 is a wasteful number, since it uses less digits than its factorization.

8461741821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332932.

The product of its digits is 86016, while the sum is 42.

The square root of 8461741821 is about 91987.7264693502. The cubic root of 8461741821 is about 2037.7610496992.

The spelling of 8461741821 in words is "eight billion, four hundred sixty-one million, seven hundred forty-one thousand, eight hundred twenty-one".