20485127101 has 4 divisors (see below), whose sum is σ = 20486164032. Its totient is φ = 20484090172.

The previous prime is 20485127093. The next prime is 20485127111. The reversal of 20485127101 is 10172158402.

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 20485127101 - 2³ = 20485127093 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 (20485127111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488245 + ... + 528538.

It is an arithmetic number, because the mean of its divisors is an integer number (5121541008).

Almost surely, 2^20485127101 is an apocalyptic number.

It is an amenable number.

20485127101 is a deficient number, since it is larger than the sum of its proper divisors (1036931).

20485127101 is a wasteful number, since it uses less digits than its factorization.

20485127101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036930.

The product of its (nonzero) digits is 4480, while the sum is 31.

The spelling of 20485127101 in words is "twenty billion, four hundred eighty-five million, one hundred twenty-seven thousand, one hundred one".