20345202154011 has 16 divisors (see below), whose sum is σ = 32633908217600. Its totient is φ = 11013944023008.

The previous prime is 20345202154009. The next prime is 20345202154061. The reversal of 20345202154011 is 11045120254302.

It is not a de Polignac number, because 20345202154011 - 2¹ = 20345202154009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20345202154011.

It is not an unprimeable number, because it can be changed into a prime (20345202154061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25495240396 + ... + 25495241193.

It is an arithmetic number, because the mean of its divisors is an integer number (2039619263600).

Almost surely, 2^{20345202154011} is an apocalyptic number.

20345202154011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20345202154011 is a deficient number, since it is larger than the sum of its proper divisors (12288706063589).

20345202154011 is a wasteful number, since it uses less digits than its factorization.

20345202154011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50990481618.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 20345202154011 in words is "twenty trillion, three hundred forty-five billion, two hundred two million, one hundred fifty-four thousand, eleven".