2841721461 has 28 divisors (see below), whose sum is σ = 4445904288. Its totient is φ = 1812101544.

The previous prime is 2841721429. The next prime is 2841721469. The reversal of 2841721461 is 1641271482.

It is a happy number.

2841721461 is a `hidden beast` number, since 28 + 4 + 172 + 1 + 461 = 666.

2841721461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2841721461 - 2⁵ = 2841721429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2841721469) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 67975 + ... + 101508.

It is an arithmetic number, because the mean of its divisors is an integer number (158782296).

Almost surely, 2^2841721461 is an apocalyptic number.

It is an amenable number.

2841721461 is a deficient number, since it is larger than the sum of its proper divisors (1604182827).

2841721461 is an equidigital number, since it uses as much as digits as its factorization.

2841721461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169524 (or 169509 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 2841721461 is about 53307.7992511415. The cubic root of 2841721461 is about 1416.4258226295.

The spelling of 2841721461 in words is "two billion, eight hundred forty-one million, seven hundred twenty-one thousand, four hundred sixty-one".