1445874920117 has 2 divisors, whose sum is σ = 1445874920118. Its totient is φ = 1445874920116.

The previous prime is 1445874920101. The next prime is 1445874920173. The reversal of 1445874920117 is 7110294785441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050735702916 + 395139217201 = 1025054^2 + 628601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445874920117 - 2⁴ = 1445874920101 is a prime.

It is a super-2 number, since 2×1445874920117² (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 (1445874920717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722937460058 + 722937460059.

It is an arithmetic number, because the mean of its divisors is an integer number (722937460059).

Almost surely, 2^{1445874920117} is an apocalyptic number.

It is an amenable number.

1445874920117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445874920117 is an equidigital number, since it uses as much as digits as its factorization.

1445874920117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 1445874920117 in words is "one trillion, four hundred forty-five billion, eight hundred seventy-four million, nine hundred twenty thousand, one hundred seventeen".