1454144659921 has 2 divisors, whose sum is σ = 1454144659922. Its totient is φ = 1454144659920.

The previous prime is 1454144659883. The next prime is 1454144659943. The reversal of 1454144659921 is 1299564414541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096761885696 + 357382774225 = 1047264^2 + 597815^2 .

It is an emirp because it is prime and its reverse (1299564414541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1454144659921 - 2²⁷ = 1454010442193 is a prime.

It is a super-2 number, since 2×1454144659921² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1454144639921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727072329960 + 727072329961.

It is an arithmetic number, because the mean of its divisors is an integer number (727072329961).

Almost surely, 2^{1454144659921} is an apocalyptic number.

It is an amenable number.

1454144659921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1454144659921 is an equidigital number, since it uses as much as digits as its factorization.

1454144659921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 55.

The spelling of 1454144659921 in words is "one trillion, four hundred fifty-four billion, one hundred forty-four million, six hundred fifty-nine thousand, nine hundred twenty-one".