662111143424 has 80 divisors (see below), whose sum is σ = 1373902356288. Its totient is φ = 318529677312.

The previous prime is 662111143409. The next prime is 662111143429. The reversal of 662111143424 is 424341111266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662111143429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250639 + ... + 1699505.

Almost surely, 2^662111143424 is an apocalyptic number.

662111143424 is a gapful number since it is divisible by the number (64) 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 662111143424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686951178144).

662111143424 is an abundant number, since it is smaller than the sum of its proper divisors (711791212864).

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

662111143424 is an equidigital number, since it uses as much as digits as its factorization.

662111143424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448995 (or 448979 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The spelling of 662111143424 in words is "six hundred sixty-two billion, one hundred eleven million, one hundred forty-three thousand, four hundred twenty-four".