2136499784640 has 504 divisors, whose sum is σ = 8425551549168. Its totient is φ = 494969978880.

The previous prime is 2136499784599. The next prime is 2136499784647. The reversal of 2136499784640 is 464879946312.

It is a happy number.

2136499784640 is a `hidden beast` number, since 2 + 1 + 3 + 6 + 499 + 7 + 84 + 64 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136499784647) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8145135 + ... + 8403345.

Almost surely, 2^{2136499784640} is an apocalyptic number.

2136499784640 is a gapful number since it is divisible by the number (20) 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 2136499784640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4212775774584).

2136499784640 is an abundant number, since it is smaller than the sum of its proper divisors (6289051764528).

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

2136499784640 is a wasteful number, since it uses less digits than its factorization.

2136499784640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258277 (or 258251 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 2136499784640 in words is "two trillion, one hundred thirty-six billion, four hundred ninety-nine million, seven hundred eighty-four thousand, six hundred forty".