20146713421155 has 32 divisors (see below), whose sum is σ = 32492851142400. Its totient is φ = 10658938093440.

The previous prime is 20146713421117. The next prime is 20146713421157. The reversal of 20146713421155 is 55112431764102.

It is a happy number.

It is not a de Polignac number, because 20146713421155 - 2⁹ = 20146713420643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20146713421157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3404169 + ... + 7202901.

It is an arithmetic number, because the mean of its divisors is an integer number (1015401598200).

Almost surely, 2^{20146713421155} is an apocalyptic number.

20146713421155 is a deficient number, since it is larger than the sum of its proper divisors (12346137721245).

20146713421155 is a wasteful number, since it uses less digits than its factorization.

20146713421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801571.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 20146713421155 in words is "twenty trillion, one hundred forty-six billion, seven hundred thirteen million, four hundred twenty-one thousand, one hundred fifty-five".