145857445873 has 4 divisors (see below), whose sum is σ = 147361130980. Its totient is φ = 144353760768.

The previous prime is 145857445849. The next prime is 145857445883. The reversal of 145857445873 is 378544758541.

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 76558462864 + 69298983009 = 276692^2 + 263247^2 .

It is a cyclic number.

It is not a de Polignac number, because 145857445873 - 2¹³ = 145857437681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145857445843) 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, 751842408 + ... + 751842601.

It is an arithmetic number, because the mean of its divisors is an integer number (36840282745).

Almost surely, 2^145857445873 is an apocalyptic number.

It is an amenable number.

145857445873 is a deficient number, since it is larger than the sum of its proper divisors (1503685107).

145857445873 is an equidigital number, since it uses as much as digits as its factorization.

145857445873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503685106.

The product of its digits is 75264000, while the sum is 61.

The spelling of 145857445873 in words is "one hundred forty-five billion, eight hundred fifty-seven million, four hundred forty-five thousand, eight hundred seventy-three".