421641740528 has 40 divisors (see below), whose sum is σ = 818811789120. Its totient is φ = 210335790080.

The previous prime is 421641740519. The next prime is 421641740543. The reversal of 421641740528 is 825047146124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25991876 + ... + 26008092.

It is an arithmetic number, because the mean of its divisors is an integer number (20470294728).

Almost surely, 2^421641740528 is an apocalyptic number.

It is an amenable number.

421641740528 is a deficient number, since it is larger than the sum of its proper divisors (397170048592).

421641740528 is a wasteful number, since it uses less digits than its factorization.

421641740528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865 (or 19859 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 421641740528 in words is "four hundred twenty-one billion, six hundred forty-one million, seven hundred forty thousand, five hundred twenty-eight".