145520230046 has 4 divisors (see below), whose sum is σ = 218280345072. Its totient is φ = 72760115022.

The previous prime is 145520230021. The next prime is 145520230049. The reversal of 145520230046 is 640032025541.

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

It is a super-2 number, since 2×145520230046² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145520229994 and 145520230021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520230049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36380057510 + ... + 36380057513.

It is an arithmetic number, because the mean of its divisors is an integer number (54570086268).

Almost surely, 2^145520230046 is an apocalyptic number.

145520230046 is a deficient number, since it is larger than the sum of its proper divisors (72760115026).

145520230046 is an equidigital number, since it uses as much as digits as its factorization.

145520230046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72760115025.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 145520230046 its reverse (640032025541), we get a palindrome (785552255587).

The spelling of 145520230046 in words is "one hundred forty-five billion, five hundred twenty million, two hundred thirty thousand, forty-six".