665562614430 has 128 divisors (see below), whose sum is σ = 1890645442560. Its totient is φ = 146794596480.

The previous prime is 665562614417. The next prime is 665562614441. The reversal of 665562614430 is 34416265566.

It is a super-3 number, since 3×665562614430³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 665562614430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 225891 + ... + 1175649.

It is an arithmetic number, because the mean of its divisors is an integer number (14770667520).

Almost surely, 2^665562614430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665562614430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945322721280).

665562614430 is an abundant number, since it is smaller than the sum of its proper divisors (1225082828130).

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

665562614430 is a wasteful number, since it uses less digits than its factorization.

665562614430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949894.

The product of its (nonzero) digits is 3110400, while the sum is 48.

Adding to 665562614430 its reverse (34416265566), we get a palindrome (699978879996).

The spelling of 665562614430 in words is "six hundred sixty-five billion, five hundred sixty-two million, six hundred fourteen thousand, four hundred thirty".