1156465401449 has 2 divisors, whose sum is σ = 1156465401450. Its totient is φ = 1156465401448.

The previous prime is 1156465401431. The next prime is 1156465401607. The reversal of 1156465401449 is 9441045646511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 841696153600 + 314769247849 = 917440^2 + 561043^2 .

It is an emirp because it is prime and its reverse (9441045646511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1156465401449 - 2⁸ = 1156465401193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1156465401397 and 1156465401406.

It is not a weakly prime, because it can be changed into another prime (1156465404449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578232700724 + 578232700725.

It is an arithmetic number, because the mean of its divisors is an integer number (578232700725).

Almost surely, 2^{1156465401449} is an apocalyptic number.

It is an amenable number.

1156465401449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156465401449 is an equidigital number, since it uses as much as digits as its factorization.

1156465401449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 1156465401449 in words is "one trillion, one hundred fifty-six billion, four hundred sixty-five million, four hundred one thousand, four hundred forty-nine".