20403524412 has 18 divisors (see below), whose sum is σ = 51575575688. Its totient is φ = 6801174792.

The previous prime is 20403524369. The next prime is 20403524429. The reversal of 20403524412 is 21442530402.

20403524412 is a `hidden beast` number, since 2 + 0 + 403 + 5 + 244 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×20403524412³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 283382248 + ... + 283382319.

Almost surely, 2^20403524412 is an apocalyptic number.

It is an amenable number.

20403524412 is an abundant number, since it is smaller than the sum of its proper divisors (31172051276).

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

20403524412 is a wasteful number, since it uses less digits than its factorization.

20403524412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566764577 (or 566764572 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 20403524412 in words is "twenty billion, four hundred three million, five hundred twenty-four thousand, four hundred twelve".