667802718330 has 96 divisors (see below), whose sum is σ = 1762041762432. Its totient is φ = 161857829760.

The previous prime is 667802718313. The next prime is 667802718337. The reversal of 667802718330 is 33817208766.

667802718330 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (667802718337) 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, 20395132 + ... + 20427848.

It is an arithmetic number, because the mean of its divisors is an integer number (18354601692).

Almost surely, 2^667802718330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667802718330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881020881216).

667802718330 is an abundant number, since it is smaller than the sum of its proper divisors (1094239044102).

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

667802718330 is a wasteful number, since it uses less digits than its factorization.

667802718330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38372 (or 38361 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 667802718330 in words is "six hundred sixty-seven billion, eight hundred two million, seven hundred eighteen thousand, three hundred thirty".