2473556981281 has 8 divisors (see below), whose sum is σ = 2499072943464. Its totient is φ = 2448061123200.

The previous prime is 2473556981249. The next prime is 2473556981293. The reversal of 2473556981281 is 1821896553742.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2273412590656 + 200144390625 = 1507784^2 + 447375^2 .

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 2473556981281 - 2⁵ = 2473556981249 is a prime.

It is a super-2 number, since 2×2473556981281² (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 (2473556481281) 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, 4778620 + ... + 5270893.

It is an arithmetic number, because the mean of its divisors is an integer number (312384117933).

Almost surely, 2^{2473556981281} is an apocalyptic number.

It is an amenable number.

2473556981281 is a deficient number, since it is larger than the sum of its proper divisors (25515962183).

2473556981281 is a wasteful number, since it uses less digits than its factorization.

2473556981281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052051.

The product of its digits is 29030400, while the sum is 61.

The spelling of 2473556981281 in words is "two trillion, four hundred seventy-three billion, five hundred fifty-six million, nine hundred eighty-one thousand, two hundred eighty-one".