20470453445 has 32 divisors (see below), whose sum is σ = 28556236800. Its totient is φ = 13960767744.

The previous prime is 20470453441. The next prime is 20470453477. The reversal of 20470453445 is 54435407402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20470453445 - 2² = 20470453441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20470453399 and 20470453408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470453441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192725 + ... + 279434.

It is an arithmetic number, because the mean of its divisors is an integer number (892382400).

Almost surely, 2^20470453445 is an apocalyptic number.

It is an amenable number.

20470453445 is a deficient number, since it is larger than the sum of its proper divisors (8085783355).

20470453445 is a wasteful number, since it uses less digits than its factorization.

20470453445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472229.

The product of its (nonzero) digits is 268800, while the sum is 38.

The spelling of 20470453445 in words is "twenty billion, four hundred seventy million, four hundred fifty-three thousand, four hundred forty-five".