1454122166561 has 4 divisors (see below), whose sum is σ = 1539658764612. Its totient is φ = 1368585568512.

The previous prime is 1454122166551. The next prime is 1454122166569. The reversal of 1454122166561 is 1656612214541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 422792550625 + 1031329615936 = 650225^2 + 1015544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1454122166561 - 2¹⁴ = 1454122150177 is a prime.

It is a super-2 number, since 2×1454122166561² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1454122166569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42768299000 + ... + 42768299033.

It is an arithmetic number, because the mean of its divisors is an integer number (384914691153).

Almost surely, 2^{1454122166561} is an apocalyptic number.

It is an amenable number.

1454122166561 is a deficient number, since it is larger than the sum of its proper divisors (85536598051).

1454122166561 is an equidigital number, since it uses as much as digits as its factorization.

1454122166561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85536598050.

The product of its digits is 345600, while the sum is 44.

The spelling of 1454122166561 in words is "one trillion, four hundred fifty-four billion, one hundred twenty-two million, one hundred sixty-six thousand, five hundred sixty-one".