145644734775228 has 48 divisors (see below), whose sum is σ = 381891210925056. Its totient is φ = 42865339999680.

The previous prime is 145644734775209. The next prime is 145644734775269. The reversal of 145644734775228 is 822577437446541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20296085428 + ... + 20296092603.

It is an arithmetic number, because the mean of its divisors is an integer number (7956066894272).

Almost surely, 2^{145644734775228} is an apocalyptic number.

It is an amenable number.

145644734775228 is an abundant number, since it is smaller than the sum of its proper divisors (236246476149828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145644734775228 is a wasteful number, since it uses less digits than its factorization.

145644734775228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40592178074 (or 40592178072 counting only the distinct ones).

The product of its digits is 1264435200, while the sum is 69.

The spelling of 145644734775228 in words is "one hundred forty-five trillion, six hundred forty-four billion, seven hundred thirty-four million, seven hundred seventy-five thousand, two hundred twenty-eight".