145372520243 has 4 divisors (see below), whose sum is σ = 145522235448. Its totient is φ = 145222805040.

The previous prime is 145372520219. The next prime is 145372520261. The reversal of 145372520243 is 342025273541.

145372520243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 145372520243 - 2⁶ = 145372520179 is a prime.

It is a super-2 number, since 2×145372520243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145372520197 and 145372520206.

It is not an unprimeable number, because it can be changed into a prime (145372523243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74856146 + ... + 74858087.

It is an arithmetic number, because the mean of its divisors is an integer number (36380558862).

Almost surely, 2^145372520243 is an apocalyptic number.

145372520243 is a deficient number, since it is larger than the sum of its proper divisors (149715205).

145372520243 is an equidigital number, since it uses as much as digits as its factorization.

145372520243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149715204.

The product of its (nonzero) digits is 201600, while the sum is 38.

Adding to 145372520243 its reverse (342025273541), we get a palindrome (487397793784).

The spelling of 145372520243 in words is "one hundred forty-five billion, three hundred seventy-two million, five hundred twenty thousand, two hundred forty-three".