2977982081281 has 8 divisors (see below), whose sum is σ = 2988638708328. Its totient is φ = 2967325872000.

The previous prime is 2977982081279. The next prime is 2977982081287. The reversal of 2977982081281 is 1821802897792.

It can be written as a sum of positive squares in 4 ways, for example, as 875424080881 + 2102558000400 = 935641^2 + 1450020^2 .

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 2977982081281 - 2¹ = 2977982081279 is a prime.

It is a super-2 number, since 2×2977982081281² (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 (2977982081287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24538491 + ... + 24659551.

It is an arithmetic number, because the mean of its divisors is an integer number (373579838541).

Almost surely, 2^{2977982081281} is an apocalyptic number.

It is an amenable number.

2977982081281 is a deficient number, since it is larger than the sum of its proper divisors (10656627047).

2977982081281 is a wasteful number, since it uses less digits than its factorization.

2977982081281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208883.

The product of its (nonzero) digits is 16257024, while the sum is 64.

The spelling of 2977982081281 in words is "two trillion, nine hundred seventy-seven billion, nine hundred eighty-two million, eighty-one thousand, two hundred eighty-one".