145085552113 has 4 divisors (see below), whose sum is σ = 145093043620. Its totient is φ = 145078060608.

The previous prime is 145085552081. The next prime is 145085552137. The reversal of 145085552113 is 311255580541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311255580541 = 220897 ⋅1409053.

It can be written as a sum of positive squares in 2 ways, for example, as 60327710689 + 84757841424 = 245617^2 + 291132^2 .

It is a cyclic number.

It is not a de Polignac number, because 145085552113 - 2⁵ = 145085552081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145085552413) 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, 3716628 + ... + 3755461.

It is an arithmetic number, because the mean of its divisors is an integer number (36273260905).

Almost surely, 2^145085552113 is an apocalyptic number.

It is an amenable number.

145085552113 is a deficient number, since it is larger than the sum of its proper divisors (7491507).

145085552113 is an equidigital number, since it uses as much as digits as its factorization.

145085552113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7491506.

The product of its (nonzero) digits is 120000, while the sum is 40.

The spelling of 145085552113 in words is "one hundred forty-five billion, eighty-five million, five hundred fifty-two thousand, one hundred thirteen".