6947043982561 has 16 divisors (see below), whose sum is σ = 7874069918400. Its totient is φ = 6089280703488.

The previous prime is 6947043982531. The next prime is 6947043982621. The reversal of 6947043982561 is 1652893407496.

It is a cyclic number.

It is not a de Polignac number, because 6947043982561 - 2⁹ = 6947043982049 is a prime.

It is a super-2 number, since 2×6947043982561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6947043982493 and 6947043982502.

It is not an unprimeable number, because it can be changed into a prime (6947043982511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182251080 + ... + 182289193.

It is an arithmetic number, because the mean of its divisors is an integer number (492129369900).

It is a 2-persistent number, because it is pandigital, and so is 2⋅6947043982561 = 13894087965122, but 3⋅6947043982561 = 20841131947683 is not.

Almost surely, 2^{6947043982561} is an apocalyptic number.

It is an amenable number.

6947043982561 is a deficient number, since it is larger than the sum of its proper divisors (927025935839).

6947043982561 is a wasteful number, since it uses less digits than its factorization.

6947043982561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364540368.

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 6947043982561 in words is "six trillion, nine hundred forty-seven billion, forty-three million, nine hundred eighty-two thousand, five hundred sixty-one".