421732065528 has 48 divisors (see below), whose sum is σ = 1142469650400. Its totient is φ = 140543061120.

The previous prime is 421732065497. The next prime is 421732065607. The reversal of 421732065528 is 825560237124.

421732065528 is a `hidden beast` number, since 4 + 2 + 1 + 73 + 20 + 6 + 552 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416413 + ... + 1008396.

It is an arithmetic number, because the mean of its divisors is an integer number (23801451050).

Almost surely, 2^421732065528 is an apocalyptic number.

It is an amenable number.

421732065528 is an abundant number, since it is smaller than the sum of its proper divisors (720737584872).

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

421732065528 is a wasteful number, since it uses less digits than its factorization.

421732065528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428932 (or 1428925 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 421732065528 in words is "four hundred twenty-one billion, seven hundred thirty-two million, sixty-five thousand, five hundred twenty-eight".