20355450641511 has 8 divisors (see below), whose sum is σ = 27141848728704. Its totient is φ = 13569676491000.

The previous prime is 20355450641497. The next prime is 20355450641579. The reversal of 20355450641511 is 11514605455302.

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

It is not a de Polignac number, because 20355450641511 - 2¹⁰ = 20355450640487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355450621511) 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, 155908041 + ... + 156038546.

It is an arithmetic number, because the mean of its divisors is an integer number (3392731091088).

Almost surely, 2^{20355450641511} is an apocalyptic number.

20355450641511 is a deficient number, since it is larger than the sum of its proper divisors (6786398087193).

20355450641511 is a wasteful number, since it uses less digits than its factorization.

20355450641511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311968341.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 20355450641511 in words is "twenty trillion, three hundred fifty-five billion, four hundred fifty million, six hundred forty-one thousand, five hundred eleven".