20409835548 has 48 divisors (see below), whose sum is σ = 48435094400. Its totient is φ = 6687403200.

The previous prime is 20409835517. The next prime is 20409835553. The reversal of 20409835548 is 84553890402.

It is a super-2 number, since 2×20409835548² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20409835497 and 20409835506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235463 + ... + 1251873.

Almost surely, 2^20409835548 is an apocalyptic number.

It is an amenable number.

20409835548 is an abundant number, since it is smaller than the sum of its proper divisors (28025258852).

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

20409835548 is a wasteful number, since it uses less digits than its factorization.

20409835548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18178 (or 18176 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 20409835548 in words is "twenty billion, four hundred nine million, eight hundred thirty-five thousand, five hundred forty-eight".