7947400974043 has 2 divisors, whose sum is σ = 7947400974044. Its totient is φ = 7947400974042.

The previous prime is 7947400974041. The next prime is 7947400974059. The reversal of 7947400974043 is 3404790047497.

It is a weak prime.

It is an emirp because it is prime and its reverse (3404790047497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7947400974043 - 2¹ = 7947400974041 is a prime.

It is a super-2 number, since 2×7947400974043² (a number of 27 digits) contains 22 as substring.

Together with 7947400974041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7947400974041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3973700487021 + 3973700487022.

It is an arithmetic number, because the mean of its divisors is an integer number (3973700487022).

Almost surely, 2^{7947400974043} is an apocalyptic number.

7947400974043 is a deficient number, since it is larger than the sum of its proper divisors (1).

7947400974043 is an equidigital number, since it uses as much as digits as its factorization.

7947400974043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 58.

The spelling of 7947400974043 in words is "seven trillion, nine hundred forty-seven billion, four hundred million, nine hundred seventy-four thousand, forty-three".