20445034361256 has 24 divisors (see below), whose sum is σ = 55371968061930. Its totient is φ = 6815011453728.

The previous prime is 20445034361243. The next prime is 20445034361293. The reversal of 20445034361256 is 65216343054402.

20445034361256 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 5 + 0 + 34 + 361 + 256 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17122762617156 + 3322271744100 = 4137966^2 + 1822710^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141979405215 + ... + 141979405358.

Almost surely, 2^{20445034361256} is an apocalyptic number.

It is an amenable number.

20445034361256 is an abundant number, since it is smaller than the sum of its proper divisors (34926933700674).

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

20445034361256 is a wasteful number, since it uses less digits than its factorization.

20445034361256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283958810585 (or 283958810578 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 20445034361256 in words is "twenty trillion, four hundred forty-five billion, thirty-four million, three hundred sixty-one thousand, two hundred fifty-six".