421453805652 has 72 divisors (see below), whose sum is σ = 1193601400992. Its totient is φ = 124261560000.

The previous prime is 421453805587. The next prime is 421453805677. The reversal of 421453805652 is 256508354124.

421453805652 is a `hidden beast` number, since 4 + 2 + 1 + 4 + 5 + 3 + 80 + 565 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 421453805598 and 421453805607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14367474 + ... + 14396777.

It is an arithmetic number, because the mean of its divisors is an integer number (16577797236).

Almost surely, 2^421453805652 is an apocalyptic number.

It is an amenable number.

421453805652 is an abundant number, since it is smaller than the sum of its proper divisors (772147595340).

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

421453805652 is a wasteful number, since it uses less digits than its factorization.

421453805652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28764309 (or 28764304 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 421453805652 in words is "four hundred twenty-one billion, four hundred fifty-three million, eight hundred five thousand, six hundred fifty-two".