145220233051 has 4 divisors (see below), whose sum is σ = 145282110232. Its totient is φ = 145158355872.

The previous prime is 145220233049. The next prime is 145220233061. The reversal of 145220233051 is 150332022541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150332022541 = 94999 ⋅1582459.

It is a cyclic number.

It is not a de Polignac number, because 145220233051 - 2¹ = 145220233049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145220233061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30935070 + ... + 30939763.

It is an arithmetic number, because the mean of its divisors is an integer number (36320527558).

Almost surely, 2^145220233051 is an apocalyptic number.

145220233051 is a deficient number, since it is larger than the sum of its proper divisors (61877181).

145220233051 is an equidigital number, since it uses as much as digits as its factorization.

145220233051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61877180.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 145220233051 its reverse (150332022541), we get a palindrome (295552255592).

The spelling of 145220233051 in words is "one hundred forty-five billion, two hundred twenty million, two hundred thirty-three thousand, fifty-one".