664811379150 has 48 divisors (see below), whose sum is σ = 1649382528000. Its totient is φ = 177213108960.

The previous prime is 664811379149. The next prime is 664811379151. The reversal of 664811379150 is 51973118466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (664811379149) and next prime (664811379151).

It is a super-3 number, since 3×664811379150³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664811379093 and 664811379102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664811379151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491950 + ... + 1253649.

It is an arithmetic number, because the mean of its divisors is an integer number (34362136000).

Almost surely, 2^664811379150 is an apocalyptic number.

664811379150 is an abundant number, since it is smaller than the sum of its proper divisors (984571148850).

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

664811379150 is a wasteful number, since it uses less digits than its factorization.

664811379150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748153 (or 1748148 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 664811379150 in words is "six hundred sixty-four billion, eight hundred eleven million, three hundred seventy-nine thousand, one hundred fifty".