1455661136773 has 2 divisors, whose sum is σ = 1455661136774. Its totient is φ = 1455661136772.

The previous prime is 1455661136767. The next prime is 1455661136791. The reversal of 1455661136773 is 3776311665541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115892224164 + 339768912609 = 1056358^2 + 582897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455661136773 - 2⁹ = 1455661136261 is a prime.

It is a super-2 number, since 2×1455661136773² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1455661130773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727830568386 + 727830568387.

It is an arithmetic number, because the mean of its divisors is an integer number (727830568387).

Almost surely, 2^{1455661136773} is an apocalyptic number.

It is an amenable number.

1455661136773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455661136773 is an equidigital number, since it uses as much as digits as its factorization.

1455661136773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 55.

The spelling of 1455661136773 in words is "one trillion, four hundred fifty-five billion, six hundred sixty-one million, one hundred thirty-six thousand, seven hundred seventy-three".