500003999961 has 8 divisors (see below), whose sum is σ = 666717168480. Its totient is φ = 333313415712.

The previous prime is 500003999941. The next prime is 500003999969. The reversal of 500003999961 is 169999300005.

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

It is not a de Polignac number, because 500003999961 - 2³³ = 491414065369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (500003999969) 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, 5594340 + ... + 5683013.

It is an arithmetic number, because the mean of its divisors is an integer number (83339646060).

Almost surely, 2^500003999961 is an apocalyptic number.

It is an amenable number.

500003999961 is a deficient number, since it is larger than the sum of its proper divisors (166713168519).

500003999961 is a wasteful number, since it uses less digits than its factorization.

500003999961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11292135.

The product of its (nonzero) digits is 590490, while the sum is 51.

The spelling of 500003999961 in words is "five hundred billion, three million, nine hundred ninety-nine thousand, nine hundred sixty-one".