421654752560 has 20 divisors (see below), whose sum is σ = 980347299888. Its totient is φ = 168661900992.

The previous prime is 421654752551. The next prime is 421654752583. The reversal of 421654752560 is 65257456124.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635342124 + ... + 2635342283.

Almost surely, 2^421654752560 is an apocalyptic number.

421654752560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421654752560 is an abundant number, since it is smaller than the sum of its proper divisors (558692547328).

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

421654752560 is a wasteful number, since it uses less digits than its factorization.

421654752560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270684420 (or 5270684414 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 421654752560 in words is "four hundred twenty-one billion, six hundred fifty-four million, seven hundred fifty-two thousand, five hundred sixty".