20291660196 has 48 divisors (see below), whose sum is σ = 48501391680. Its totient is φ = 6600678400.

The previous prime is 20291660171. The next prime is 20291660203. The reversal of 20291660196 is 69106619202.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7605 + ... + 201596.

It is an arithmetic number, because the mean of its divisors is an integer number (1010445660).

Almost surely, 2^20291660196 is an apocalyptic number.

It is an amenable number.

20291660196 is an abundant number, since it is smaller than the sum of its proper divisors (28209731484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20291660196 is a wasteful number, since it uses less digits than its factorization.

20291660196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209404 (or 209402 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 20291660196 in words is "twenty billion, two hundred ninety-one million, six hundred sixty thousand, one hundred ninety-six".