7814040439477 has 2 divisors, whose sum is σ = 7814040439478. Its totient is φ = 7814040439476.

The previous prime is 7814040439427. The next prime is 7814040439493. The reversal of 7814040439477 is 7749340404187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5018142094641 + 2795898344836 = 2240121^2 + 1672094^2 .

It is a cyclic number.

It is not a de Polignac number, because 7814040439477 - 2¹¹ = 7814040437429 is a prime.

It is a super-2 number, since 2×7814040439477² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7814040439427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3907020219738 + 3907020219739.

It is an arithmetic number, because the mean of its divisors is an integer number (3907020219739).

Almost surely, 2^{7814040439477} is an apocalyptic number.

It is an amenable number.

7814040439477 is a deficient number, since it is larger than the sum of its proper divisors (1).

7814040439477 is an equidigital number, since it uses as much as digits as its factorization.

7814040439477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 7814040439477 in words is "seven trillion, eight hundred fourteen billion, forty million, four hundred thirty-nine thousand, four hundred seventy-seven".