145222047855 has 16 divisors (see below), whose sum is σ = 258172529760. Its totient is φ = 77451758784.

The previous prime is 145222047811. The next prime is 145222047857. The reversal of 145222047855 is 558740222541.

145222047855 is a `hidden beast` number, since 1 + 4 + 522 + 2 + 0 + 4 + 78 + 55 = 666.

It is not a de Polignac number, because 145222047855 - 2¹³ = 145222039663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 145222047855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145222047857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537859302 + ... + 537859571.

It is an arithmetic number, because the mean of its divisors is an integer number (16135783110).

Almost surely, 2^145222047855 is an apocalyptic number.

145222047855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145222047855 is a deficient number, since it is larger than the sum of its proper divisors (112950481905).

145222047855 is a wasteful number, since it uses less digits than its factorization.

145222047855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075718887 (or 1075718881 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 45.

The spelling of 145222047855 in words is "one hundred forty-five billion, two hundred twenty-two million, forty-seven thousand, eight hundred fifty-five".