1405399951129 has 2 divisors, whose sum is σ = 1405399951130. Its totient is φ = 1405399951128.

The previous prime is 1405399951127. The next prime is 1405399951157. The reversal of 1405399951129 is 9211599935041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232366414400 + 173033536729 = 1110120^2 + 415973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405399951129 - 2¹ = 1405399951127 is a prime.

Together with 1405399951127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1405399951127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702699975564 + 702699975565.

It is an arithmetic number, because the mean of its divisors is an integer number (702699975565).

Almost surely, 2^{1405399951129} is an apocalyptic number.

It is an amenable number.

1405399951129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405399951129 is an equidigital number, since it uses as much as digits as its factorization.

1405399951129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3936600, while the sum is 58.

The spelling of 1405399951129 in words is "one trillion, four hundred five billion, three hundred ninety-nine million, nine hundred fifty-one thousand, one hundred twenty-nine".