4245354811620 has 72 divisors (see below), whose sum is σ = 13868159058936. Its totient is φ = 1045010414592.

The previous prime is 4245354811603. The next prime is 4245354811637. The reversal of 4245354811620 is 261184535424.

4245354811620 is a `hidden beast` number, since 4 + 2 + 4 + 5 + 3 + 5 + 4 + 8 + 11 + 620 = 666.

It is an interprime number because it is at equal distance from previous prime (4245354811603) and next prime (4245354811637).

It can be written as a sum of positive squares in 4 ways, for example, as 84440223396 + 4160914588224 = 290586^2 + 2039832^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 907124757 + ... + 907129436.

It is an arithmetic number, because the mean of its divisors is an integer number (192613320263).

Almost surely, 2^{4245354811620} is an apocalyptic number.

It is an amenable number.

4245354811620 is an abundant number, since it is smaller than the sum of its proper divisors (9622804247316).

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

4245354811620 is a wasteful number, since it uses less digits than its factorization.

4245354811620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814254221 (or 1814254216 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 4245354811620 in words is "four trillion, two hundred forty-five billion, three hundred fifty-four million, eight hundred eleven thousand, six hundred twenty".