20447097552 has 120 divisors (see below), whose sum is σ = 67507980800. Its totient is φ = 5653566720.

The previous prime is 20447097533. The next prime is 20447097557. The reversal of 20447097552 is 25579074402.

20447097552 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 7 + 0 + 97 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20447097498 and 20447097507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20447097557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295927 + ... + 358422.

Almost surely, 2^20447097552 is an apocalyptic number.

It is an amenable number.

20447097552 is an abundant number, since it is smaller than the sum of its proper divisors (47060883248).

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

20447097552 is a wasteful number, since it uses less digits than its factorization.

20447097552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654401 (or 654392 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 20447097552 in words is "twenty billion, four hundred forty-seven million, ninety-seven thousand, five hundred fifty-two".