6547033872961 has 2 divisors, whose sum is σ = 6547033872962. Its totient is φ = 6547033872960.

The previous prime is 6547033872949. The next prime is 6547033873027. The reversal of 6547033872961 is 1692783307456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4410084000400 + 2136949872561 = 2100020^2 + 1461831^2 .

It is a cyclic number.

It is not a de Polignac number, because 6547033872961 - 2¹⁷ = 6547033741889 is a prime.

It is a super-2 number, since 2×6547033872961² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6547033872961.

It is not a weakly prime, because it can be changed into another prime (6547033872901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273516936480 + 3273516936481.

It is an arithmetic number, because the mean of its divisors is an integer number (3273516936481).

It is a 1-persistent number, because it is pandigital, but 2⋅6547033872961 = 13094067745922 is not.

Almost surely, 2^{6547033872961} is an apocalyptic number.

It is an amenable number.

6547033872961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6547033872961 is an equidigital number, since it uses as much as digits as its factorization.

6547033872961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 6547033872961 in words is "six trillion, five hundred forty-seven billion, thirty-three million, eight hundred seventy-two thousand, nine hundred sixty-one".