145555020550 has 12 divisors (see below), whose sum is σ = 270732338316. Its totient is φ = 58222008200.

The previous prime is 145555020539. The next prime is 145555020571. The reversal of 145555020550 is 55020555541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1455550156 + ... + 1455550255.

It is an arithmetic number, because the mean of its divisors is an integer number (22561028193).

Almost surely, 2^145555020550 is an apocalyptic number.

145555020550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145555020550 is a deficient number, since it is larger than the sum of its proper divisors (125177317766).

145555020550 is a wasteful number, since it uses less digits than its factorization.

145555020550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911100423 (or 2911100418 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 37.

The spelling of 145555020550 in words is "one hundred forty-five billion, five hundred fifty-five million, twenty thousand, five hundred fifty".