20475472351 has 6 divisors (see below), whose sum is σ = 20869094120. Its totient is φ = 20089139928.

The previous prime is 20475472331. The next prime is 20475472387. The reversal of 20475472351 is 15327457402.

It is not a de Polignac number, because 20475472351 - 2⁵ = 20475472319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475472331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3641811 + ... + 3647428.

Almost surely, 2^20475472351 is an apocalyptic number.

20475472351 is a deficient number, since it is larger than the sum of its proper divisors (393621769).

20475472351 is an frugal number, since it uses more digits than its factorization.

20475472351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289345 (or 7289292 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 20475472351 in words is "twenty billion, four hundred seventy-five million, four hundred seventy-two thousand, three hundred fifty-one".