665707629048 has 128 divisors (see below), whose sum is σ = 2076504145920. Its totient is φ = 172780133760.

The previous prime is 665707629047. The next prime is 665707629073. The reversal of 665707629048 is 840926707566.

It is a junction number, because it is equal to n+sod(n) for n = 665707628982 and 665707629000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665707629043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2316565 + ... + 2588027.

It is an arithmetic number, because the mean of its divisors is an integer number (16222688640).

Almost surely, 2^665707629048 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 665707629048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038252072960).

665707629048 is an abundant number, since it is smaller than the sum of its proper divisors (1410796516872).

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

665707629048 is a wasteful number, since it uses less digits than its factorization.

665707629048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272817 (or 272813 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 665707629048 in words is "six hundred sixty-five billion, seven hundred seven million, six hundred twenty-nine thousand, forty-eight".