20256782445 has 48 divisors (see below), whose sum is σ = 36755057664. Its totient is φ = 10307808000.

The previous prime is 20256782407. The next prime is 20256782453. The reversal of 20256782445 is 54428765202.

20256782445 is a `hidden beast` number, since 2 + 0 + 2 + 567 + 82 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 20256782445 - 2²⁵ = 20223228013 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 20256782445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3216 + ... + 201305.

It is an arithmetic number, because the mean of its divisors is an integer number (765730368).

Almost surely, 2^20256782445 is an apocalyptic number.

It is an amenable number.

20256782445 is a deficient number, since it is larger than the sum of its proper divisors (16498275219).

20256782445 is a wasteful number, since it uses less digits than its factorization.

20256782445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204634 (or 204631 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 20256782445 in words is "twenty billion, two hundred fifty-six million, seven hundred eighty-two thousand, four hundred forty-five".