2078641837429 has 2 divisors, whose sum is σ = 2078641837430. Its totient is φ = 2078641837428.

The previous prime is 2078641837427. The next prime is 2078641837543. The reversal of 2078641837429 is 9247381468702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1834946578404 + 243695259025 = 1354602^2 + 493655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078641837429 - 2¹ = 2078641837427 is a prime.

Together with 2078641837427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078641837427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039320918714 + 1039320918715.

It is an arithmetic number, because the mean of its divisors is an integer number (1039320918715).

Almost surely, 2^{2078641837429} is an apocalyptic number.

It is an amenable number.

2078641837429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078641837429 is an equidigital number, since it uses as much as digits as its factorization.

2078641837429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 2078641837429 in words is "two trillion, seventy-eight billion, six hundred forty-one million, eight hundred thirty-seven thousand, four hundred twenty-nine".