145221233543 has 4 divisors (see below), whose sum is σ = 146718359760. Its totient is φ = 143724107328.

The previous prime is 145221233477. The next prime is 145221233557. The reversal of 145221233543 is 345332122541.

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 145221233543 - 2²⁶ = 145154124679 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 (145221133543) 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, 748562963 + ... + 748563156.

It is an arithmetic number, because the mean of its divisors is an integer number (36679589940).

Almost surely, 2^145221233543 is an apocalyptic number.

145221233543 is a deficient number, since it is larger than the sum of its proper divisors (1497126217).

145221233543 is an equidigital number, since it uses as much as digits as its factorization.

145221233543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497126216.

The product of its digits is 86400, while the sum is 35.

The spelling of 145221233543 in words is "one hundred forty-five billion, two hundred twenty-one million, two hundred thirty-three thousand, five hundred forty-three".