420660573750 has 160 divisors (see below), whose sum is σ = 1170078829920. Its totient is φ = 111988800000.

The previous prime is 420660573733. The next prime is 420660573779. The reversal of 420660573750 is 57375066024.

420660573750 is a `hidden beast` number, since 4 + 2 + 0 + 6 + 6 + 0 + 573 + 75 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 420660573696 and 420660573705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20813650 + ... + 20833850.

It is an arithmetic number, because the mean of its divisors is an integer number (7312992687).

Almost surely, 2^420660573750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420660573750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585039414960).

420660573750 is an abundant number, since it is smaller than the sum of its proper divisors (749418256170).

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

420660573750 is a wasteful number, since it uses less digits than its factorization.

420660573750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20849 (or 20828 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The spelling of 420660573750 in words is "four hundred twenty billion, six hundred sixty million, five hundred seventy-three thousand, seven hundred fifty".