153840358123208 has 8 divisors (see below), whose sum is σ = 288450671481030. Its totient is φ = 76920179061600.

The previous prime is 153840358123189. The next prime is 153840358123223. The reversal of 153840358123208 is 802321853048351.

It can be written as a sum of positive squares in only one way, i.e., 95472011076484 + 58368347046724 = 9770978^2 + 7639918^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×153840358123208² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 153840358123208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9615022382693 + ... + 9615022382708.

Almost surely, 2^{153840358123208} is an apocalyptic number.

It is an amenable number.

153840358123208 is a deficient number, since it is larger than the sum of its proper divisors (134610313357822).

153840358123208 is a wasteful number, since it uses less digits than its factorization.

153840358123208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19230044765407 (or 19230044765403 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 153840358123208 in words is "one hundred fifty-three trillion, eight hundred forty billion, three hundred fifty-eight million, one hundred twenty-three thousand, two hundred eight".