662161671600 has 360 divisors, whose sum is σ = 2505651003072. Its totient is φ = 148175539200.

The previous prime is 662161671557. The next prime is 662161671607. The reversal of 662161671600 is 6176161266.

It is a happy number.

It is a super-2 number, since 2×662161671600² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (662161671607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2082387 + ... + 2379213.

Almost surely, 2^662161671600 is an apocalyptic number.

662161671600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662161671600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252825501536).

662161671600 is an abundant number, since it is smaller than the sum of its proper divisors (1843489331472).

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

662161671600 is a wasteful number, since it uses less digits than its factorization.

662161671600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296885 (or 296861 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 662161671600 in words is "six hundred sixty-two billion, one hundred sixty-one million, six hundred seventy-one thousand, six hundred".