20146170113477 has 4 divisors (see below), whose sum is σ = 20401184925120. Its totient is φ = 19891155301836.

The previous prime is 20146170113449. The next prime is 20146170113497. The reversal of 20146170113477 is 77431107164102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20146170113477 - 2³² = 20141875146181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146170113497) 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 3 ways as a sum of consecutive naturals, for example, 127507405703 + ... + 127507405860.

It is an arithmetic number, because the mean of its divisors is an integer number (5100296231280).

Almost surely, 2^{20146170113477} is an apocalyptic number.

It is an amenable number.

20146170113477 is a deficient number, since it is larger than the sum of its proper divisors (255014811643).

20146170113477 is an equidigital number, since it uses as much as digits as its factorization.

20146170113477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255014811642.

The product of its (nonzero) digits is 197568, while the sum is 44.

Adding to 20146170113477 its reverse (77431107164102), we get a palindrome (97577277277579).

The spelling of 20146170113477 in words is "twenty trillion, one hundred forty-six billion, one hundred seventy million, one hundred thirteen thousand, four hundred seventy-seven".