2841479977561 has 27 divisors (see below), whose sum is σ = 3038714346231. Its totient is φ = 2656506461184.

The previous prime is 2841479977559. The next prime is 2841479977571. The reversal of 2841479977561 is 1657799741482.

The square root of 2841479977561 is 1685669.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 458964245961 + 2382515731600 = 677469^2 + 1543540^2 .

It is not a de Polignac number, because 2841479977561 - 2¹ = 2841479977559 is a prime.

It is a super-2 number, since 2×2841479977561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2841479977541) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6562309201 + ... + 6562309633.

Almost surely, 2^{2841479977561} is an apocalyptic number.

2841479977561 is the 1685669-th square number.

2841479977561 is the 842835-th centered octagonal number.

It is an amenable number.

2841479977561 is a deficient number, since it is larger than the sum of its proper divisors (197234368670).

2841479977561 is an frugal number, since it uses more digits than its factorization.

2841479977561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358 (or 679 counting only the distinct ones).

The product of its digits is 213373440, while the sum is 70.

The spelling of 2841479977561 in words is "two trillion, eight hundred forty-one billion, four hundred seventy-nine million, nine hundred seventy-seven thousand, five hundred sixty-one".