20169490101 has 8 divisors (see below), whose sum is σ = 27400062240. Its totient is φ = 13192622352.

The previous prime is 20169490097. The next prime is 20169490123. The reversal of 20169490101 is 10109496102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20169490101 - 2² = 20169490097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20169490151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63425911 + ... + 63426228.

It is an arithmetic number, because the mean of its divisors is an integer number (3425007780).

Almost surely, 2^20169490101 is an apocalyptic number.

It is an amenable number.

20169490101 is a deficient number, since it is larger than the sum of its proper divisors (7230572139).

20169490101 is a wasteful number, since it uses less digits than its factorization.

20169490101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126852195.

The product of its (nonzero) digits is 3888, while the sum is 33.

The spelling of 20169490101 in words is "twenty billion, one hundred sixty-nine million, four hundred ninety thousand, one hundred one".