20413554523145 has 16 divisors (see below), whose sum is σ = 28042469395200. Its totient is φ = 13974497219904.

The previous prime is 20413554523123. The next prime is 20413554523213. The reversal of 20413554523145 is 54132545531402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20413554523145 - 2¹⁰ = 20413554522121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20413554523096 and 20413554523105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486827462 + ... + 486869391.

It is an arithmetic number, because the mean of its divisors is an integer number (1752654337200).

Almost surely, 2^{20413554523145} is an apocalyptic number.

It is an amenable number.

20413554523145 is a deficient number, since it is larger than the sum of its proper divisors (7628914872055).

20413554523145 is an equidigital number, since it uses as much as digits as its factorization.

20413554523145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973697464.

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 20413554523145 in words is "twenty trillion, four hundred thirteen billion, five hundred fifty-four million, five hundred twenty-three thousand, one hundred forty-five".