7400643263129 has 2 divisors, whose sum is σ = 7400643263130. Its totient is φ = 7400643263128.

The previous prime is 7400643263051. The next prime is 7400643263159. The reversal of 7400643263129 is 9213623460047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7182255280729 + 218387982400 = 2679973^2 + 467320^2 .

It is a cyclic number.

It is not a de Polignac number, because 7400643263129 - 2¹² = 7400643259033 is a prime.

It is not a weakly prime, because it can be changed into another prime (7400643263159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700321631564 + 3700321631565.

It is an arithmetic number, because the mean of its divisors is an integer number (3700321631565).

Almost surely, 2^{7400643263129} is an apocalyptic number.

It is an amenable number.

7400643263129 is a deficient number, since it is larger than the sum of its proper divisors (1).

7400643263129 is an equidigital number, since it uses as much as digits as its factorization.

7400643263129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 7400643263129 in words is "seven trillion, four hundred billion, six hundred forty-three million, two hundred sixty-three thousand, one hundred twenty-nine".