136321520250 has 32 divisors (see below), whose sum is σ = 340258516416. Its totient is φ = 36352405200.

The previous prime is 136321520221. The next prime is 136321520261. The reversal of 136321520250 is 52025123631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90880264 + ... + 90881763.

It is an arithmetic number, because the mean of its divisors is an integer number (10633078638).

Almost surely, 2^136321520250 is an apocalyptic number.

136321520250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136321520250 is an abundant number, since it is smaller than the sum of its proper divisors (203936996166).

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

136321520250 is a wasteful number, since it uses less digits than its factorization.

136321520250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181762047 (or 181762037 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 136321520250 its reverse (52025123631), we get a palindrome (188346643881).

The spelling of 136321520250 in words is "one hundred thirty-six billion, three hundred twenty-one million, five hundred twenty thousand, two hundred fifty".