1465112227781 has 2 divisors, whose sum is σ = 1465112227782. Its totient is φ = 1465112227780.

The previous prime is 1465112227703. The next prime is 1465112227793. The reversal of 1465112227781 is 1877222115641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1355673663556 + 109438564225 = 1164334^2 + 330815^2 .

It is an emirp because it is prime and its reverse (1877222115641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1465112227781 - 2³⁰ = 1464038485957 is a prime.

It is a super-2 number, since 2×1465112227781² (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 (1465112227181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732556113890 + 732556113891.

It is an arithmetic number, because the mean of its divisors is an integer number (732556113891).

Almost surely, 2^{1465112227781} is an apocalyptic number.

It is an amenable number.

1465112227781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1465112227781 is an equidigital number, since it uses as much as digits as its factorization.

1465112227781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 47.

The spelling of 1465112227781 in words is "one trillion, four hundred sixty-five billion, one hundred twelve million, two hundred twenty-seven thousand, seven hundred eighty-one".