664819356150 has 288 divisors, whose sum is σ = 1904094915840. Its totient is φ = 165725429760.

The previous prime is 664819356121. The next prime is 664819356169. The reversal of 664819356150 is 51653918466.

664819356150 is a `hidden beast` number, since 6 + 6 + 4 + 8 + 19 + 3 + 5 + 615 + 0 = 666.

664819356150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1387931611 + ... + 1387932089.

It is an arithmetic number, because the mean of its divisors is an integer number (6611440680).

Almost surely, 2^664819356150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664819356150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952047457920).

664819356150 is an abundant number, since it is smaller than the sum of its proper divisors (1239275559690).

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

664819356150 is a wasteful number, since it uses less digits than its factorization.

664819356150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 664819356150 in words is "six hundred sixty-four billion, eight hundred nineteen million, three hundred fifty-six thousand, one hundred fifty".