164507245650 has 144 divisors (see below), whose sum is σ = 500013809568. Its totient is φ = 39880512000.

The previous prime is 164507245559. The next prime is 164507245681. The reversal of 164507245650 is 56542705461.

164507245650 is a `hidden beast` number, since 1 + 64 + 5 + 0 + 7 + 24 + 565 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 164507245596 and 164507245605.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 481791 + ... + 749090.

It is an arithmetic number, because the mean of its divisors is an integer number (3472318122).

Almost surely, 2^164507245650 is an apocalyptic number.

164507245650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164507245650 is an abundant number, since it is smaller than the sum of its proper divisors (335506563918).

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

164507245650 is a wasteful number, since it uses less digits than its factorization.

164507245650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230919 (or 1230902 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 164507245650 in words is "one hundred sixty-four billion, five hundred seven million, two hundred forty-five thousand, six hundred fifty".