136605440553421 has 8 divisors (see below), whose sum is σ = 156121350465600. Its totient is φ = 117089742385248.

The previous prime is 136605440553419. The next prime is 136605440553431. The reversal of 136605440553421 is 124355044506631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136605440553421 - 2¹ = 136605440553419 is a prime.

It is a super-2 number, since 2×136605440553421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136605440553431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51551131 + ... + 54136216.

It is an arithmetic number, because the mean of its divisors is an integer number (19515168808200).

Almost surely, 2^{136605440553421} is an apocalyptic number.

It is an amenable number.

136605440553421 is a deficient number, since it is larger than the sum of its proper divisors (19515909912179).

136605440553421 is a wasteful number, since it uses less digits than its factorization.

136605440553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105872003.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 136605440553421 in words is "one hundred thirty-six trillion, six hundred five billion, four hundred forty million, five hundred fifty-three thousand, four hundred twenty-one".