421548520016 has 40 divisors (see below), whose sum is σ = 881139749280. Its totient is φ = 194215222656.

The previous prime is 421548520013. The next prime is 421548520117. The reversal of 421548520016 is 610025845124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421548520013) by changing a digit.

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, 1682786 + ... + 1916993.

It is an arithmetic number, because the mean of its divisors is an integer number (22028493732).

Almost surely, 2^421548520016 is an apocalyptic number.

It is an amenable number.

421548520016 is an abundant number, since it is smaller than the sum of its proper divisors (459591229264).

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

421548520016 is a wasteful number, since it uses less digits than its factorization.

421548520016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600363 (or 3600357 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 421548520016 in words is "four hundred twenty-one billion, five hundred forty-eight million, five hundred twenty thousand, sixteen".