662042017782 has 96 divisors (see below), whose sum is σ = 1504772465664. Its totient is φ = 210097800000.

The previous prime is 662042017781. The next prime is 662042017783. The reversal of 662042017782 is 287710240266.

It is a happy number.

662042017782 is a `hidden beast` number, since 6 + 620 + 4 + 2 + 0 + 17 + 7 + 8 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (662042017781) and next prime (662042017783).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662042017781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29411532 + ... + 29434032.

It is an arithmetic number, because the mean of its divisors is an integer number (15674713184).

Almost surely, 2^662042017782 is an apocalyptic number.

662042017782 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 662042017782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752386232832).

662042017782 is an abundant number, since it is smaller than the sum of its proper divisors (842730447882).

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

662042017782 is a wasteful number, since it uses less digits than its factorization.

662042017782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23394 (or 23391 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 662042017782 in words is "six hundred sixty-two billion, forty-two million, seventeen thousand, seven hundred eighty-two".