428604551332212 has 12 divisors (see below), whose sum is σ = 1000077286441856. Its totient is φ = 142868183777400.

The previous prime is 428604551332187. The next prime is 428604551332213. The reversal of 428604551332212 is 212233155406824.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×428604551332212² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428604551332213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17858522972164 + ... + 17858522972187.

Almost surely, 2^{428604551332212} is an apocalyptic number.

It is an amenable number.

428604551332212 is an abundant number, since it is smaller than the sum of its proper divisors (571472735109644).

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

428604551332212 is a wasteful number, since it uses less digits than its factorization.

428604551332212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35717045944358 (or 35717045944356 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 428604551332212 in words is "four hundred twenty-eight trillion, six hundred four billion, five hundred fifty-one million, three hundred thirty-two thousand, two hundred twelve".