164505260650 has 24 divisors (see below), whose sum is σ = 306375690924. Its totient is φ = 65716963200.

The previous prime is 164505260587. The next prime is 164505260653. The reversal of 164505260650 is 56062505461.

It can be written as a sum of positive squares in 6 ways, for example, as 23909509129 + 140595751521 = 154627^2 + 374961^2 .

It is not an unprimeable number, because it can be changed into a prime (164505260653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2089491 + ... + 2166790.

Almost surely, 2^164505260650 is an apocalyptic number.

164505260650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164505260650 is a deficient number, since it is larger than the sum of its proper divisors (141870430274).

164505260650 is a wasteful number, since it uses less digits than its factorization.

164505260650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257066 (or 4257061 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 164505260650 in words is "one hundred sixty-four billion, five hundred five million, two hundred sixty thousand, six hundred fifty".