136521004101640 has 16 divisors (see below), whose sum is σ = 307172259228780. Its totient is φ = 54608401640640.

The previous prime is 136521004101611. The next prime is 136521004101667. The reversal of 136521004101640 is 46101400125631.

It can be written as a sum of positive squares in 2 ways, for example, as 122705822034756 + 13815182066884 = 11077266^2 + 3716878^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136521004101596 and 136521004101605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706512551231 + ... + 1706512551310.

Almost surely, 2^{136521004101640} is an apocalyptic number.

136521004101640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136521004101640 is an abundant number, since it is smaller than the sum of its proper divisors (170651255127140).

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

136521004101640 is a wasteful number, since it uses less digits than its factorization.

136521004101640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413025102552 (or 3413025102548 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 136521004101640 in words is "one hundred thirty-six trillion, five hundred twenty-one billion, four million, one hundred one thousand, six hundred forty".