145520044155 has 40 divisors (see below), whose sum is σ = 260895179952. Its totient is φ = 77599674432.

The previous prime is 145520044133. The next prime is 145520044157. The reversal of 145520044155 is 551440025541.

145520044155 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 200 + 441 + 5 + 5 = 666.

It is not a de Polignac number, because 145520044155 - 2⁵ = 145520044123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145520044157) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3398137 + ... + 3440693.

Almost surely, 2^145520044155 is an apocalyptic number.

145520044155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145520044155 is a deficient number, since it is larger than the sum of its proper divisors (115375135797).

145520044155 is an equidigital number, since it uses as much as digits as its factorization.

145520044155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51017 (or 51008 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 145520044155 its reverse (551440025541), we get a palindrome (696960069696).

The spelling of 145520044155 in words is "one hundred forty-five billion, five hundred twenty million, forty-four thousand, one hundred fifty-five".