20418495552 has 280 divisors, whose sum is σ = 74496265536. Its totient is φ = 5384973312.

The previous prime is 20418495533. The next prime is 20418495553. The reversal of 20418495552 is 25559481402.

20418495552 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 8 + 4 + 95 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20418495498 and 20418495507.

It is not an unprimeable number, because it can be changed into a prime (20418495553) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 450103 + ... + 493385.

Almost surely, 2^20418495552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20418495552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37248132768).

20418495552 is an abundant number, since it is smaller than the sum of its proper divisors (54077769984).

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

20418495552 is a wasteful number, since it uses less digits than its factorization.

20418495552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43327 (or 43308 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 20418495552 in words is "twenty billion, four hundred eighteen million, four hundred ninety-five thousand, five hundred fifty-two".