145845939823 has 4 divisors (see below), whose sum is σ = 147692091040. Its totient is φ = 143999788608.

The previous prime is 145845939817. The next prime is 145845939859. The reversal of 145845939823 is 328939548541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328939548541 = 10993 ⋅29922637.

It is a cyclic number.

It is not a de Polignac number, because 145845939823 - 2³⁷ = 8406986351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145845939803) 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, 923075490 + ... + 923075647.

It is an arithmetic number, because the mean of its divisors is an integer number (36923022760).

Almost surely, 2^145845939823 is an apocalyptic number.

145845939823 is a deficient number, since it is larger than the sum of its proper divisors (1846151217).

145845939823 is an equidigital number, since it uses as much as digits as its factorization.

145845939823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846151216.

The product of its digits is 37324800, while the sum is 61.

The spelling of 145845939823 in words is "one hundred forty-five billion, eight hundred forty-five million, nine hundred thirty-nine thousand, eight hundred twenty-three".