145256775808 has 32 divisors (see below), whose sum is σ = 306401016060. Its totient is φ = 68356128768.

The previous prime is 145256775767. The next prime is 145256775817. The reversal of 145256775808 is 808577652541.

It can be written as a sum of positive squares in 2 ways, for example, as 127597555264 + 17659220544 = 357208^2 + 132888^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33374841 + ... + 33379192.

Almost surely, 2^145256775808 is an apocalyptic number.

It is an amenable number.

145256775808 is an abundant number, since it is smaller than the sum of its proper divisors (161144240252).

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

145256775808 is an equidigital number, since it uses as much as digits as its factorization.

145256775808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66754064 (or 66754052 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 145256775808 in words is "one hundred forty-five billion, two hundred fifty-six million, seven hundred seventy-five thousand, eight hundred eight".