136221045526340 has 96 divisors (see below), whose sum is σ = 306555826106880. Its totient is φ = 50662862954496.

The previous prime is 136221045526327. The next prime is 136221045526351. The reversal of 136221045526340 is 43625540122631.

It is a junction number, because it is equal to n+sod(n) for n = 136221045526291 and 136221045526300.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636056396 + ... + 636270524.

It is an arithmetic number, because the mean of its divisors is an integer number (3193289855280).

Almost surely, 2^{136221045526340} is an apocalyptic number.

136221045526340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136221045526340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153277913053440).

136221045526340 is an abundant number, since it is smaller than the sum of its proper divisors (170334780580540).

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

136221045526340 is a wasteful number, since it uses less digits than its factorization.

136221045526340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236781 (or 236779 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

Adding to 136221045526340 its reverse (43625540122631), we get a palindrome (179846585648971).

The spelling of 136221045526340 in words is "one hundred thirty-six trillion, two hundred twenty-one billion, forty-five million, five hundred twenty-six thousand, three hundred forty".