21427060785432 has 32 divisors (see below), whose sum is σ = 53573766820080. Its totient is φ = 7141538280960.

The previous prime is 21427060785421. The next prime is 21427060785451. The reversal of 21427060785432 is 23458706072412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50742493 + ... + 51163020.

Almost surely, 2^{21427060785432} is an apocalyptic number.

It is an amenable number.

21427060785432 is an abundant number, since it is smaller than the sum of its proper divisors (32146706034648).

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

21427060785432 is a wasteful number, since it uses less digits than its factorization.

21427060785432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101914283 (or 101914279 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 21427060785432 in words is "twenty-one trillion, four hundred twenty-seven billion, sixty million, seven hundred eighty-five thousand, four hundred thirty-two".