20500404601 has 8 divisors (see below), whose sum is σ = 21725190144. Its totient is φ = 19277716800.

The previous prime is 20500404581. The next prime is 20500404697. The reversal of 20500404601 is 10640400502.

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

It is a cyclic number.

It is not a de Polignac number, because 20500404601 - 2⁷ = 20500404473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20500401601) 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, 504285 + ... + 543418.

It is an arithmetic number, because the mean of its divisors is an integer number (2715648768).

Almost surely, 2^20500404601 is an apocalyptic number.

It is an amenable number.

20500404601 is a deficient number, since it is larger than the sum of its proper divisors (1224785543).

20500404601 is a wasteful number, since it uses less digits than its factorization.

20500404601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048871.

The product of its (nonzero) digits is 960, while the sum is 22.

The spelling of 20500404601 in words is "twenty billion, five hundred million, four hundred four thousand, six hundred one".