662537145920 has 224 divisors, whose sum is σ = 1759419900000. Its totient is φ = 235950833664.

The previous prime is 662537145889. The next prime is 662537145937. The reversal of 662537145920 is 29541735266.

It can be written as a sum of positive squares in 16 ways, for example, as 276667584064 + 385869561856 = 525992^2 + 621184^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150677162 + ... + 150681558.

It is an arithmetic number, because the mean of its divisors is an integer number (7854553125).

Almost surely, 2^662537145920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662537145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879709950000).

662537145920 is an abundant number, since it is smaller than the sum of its proper divisors (1096882754080).

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

662537145920 is a wasteful number, since it uses less digits than its factorization.

662537145920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 662537145920 in words is "six hundred sixty-two billion, five hundred thirty-seven million, one hundred forty-five thousand, nine hundred twenty".