145473228784555 has 32 divisors (see below), whose sum is σ = 205803253463040. Its totient is φ = 96653330421120.

The previous prime is 145473228784453. The next prime is 145473228784591. The reversal of 145473228784555 is 555487822374541.

It is a happy number.

It is not a de Polignac number, because 145473228784555 - 2¹³ = 145473228776363 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 508344595 + ... + 508630684.

It is an arithmetic number, because the mean of its divisors is an integer number (6431351670720).

Almost surely, 2^{145473228784555} is an apocalyptic number.

145473228784555 is a deficient number, since it is larger than the sum of its proper divisors (60330024678485).

145473228784555 is a wasteful number, since it uses less digits than its factorization.

145473228784555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016975419.

The product of its digits is 1505280000, while the sum is 70.

The spelling of 145473228784555 in words is "one hundred forty-five trillion, four hundred seventy-three billion, two hundred twenty-eight million, seven hundred eighty-four thousand, five hundred fifty-five".