20146994097 has 8 divisors (see below), whose sum is σ = 26934678144. Its totient is φ = 13395319728.

The previous prime is 20146994081. The next prime is 20146994099. The reversal of 20146994097 is 79049964102.

It is a happy number.

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

It is not a de Polignac number, because 20146994097 - 2⁴ = 20146994081 is a prime.

It is a super-2 number, since 2×20146994097² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20146994099) 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 7 ways as a sum of consecutive naturals, for example, 9001113 + ... + 9003350.

It is an arithmetic number, because the mean of its divisors is an integer number (3366834768).

Almost surely, 2^20146994097 is an apocalyptic number.

It is an amenable number.

20146994097 is a deficient number, since it is larger than the sum of its proper divisors (6787684047).

20146994097 is a wasteful number, since it uses less digits than its factorization.

20146994097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18004839.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 20146994097 in words is "twenty billion, one hundred forty-six million, nine hundred ninety-four thousand, ninety-seven".