2100650505 has 8 divisors (see below), whose sum is σ = 3361040832. Its totient is φ = 1120346928.

The previous prime is 2100650459. The next prime is 2100650533. The reversal of 2100650505 is 5050560012.

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

It is not a de Polignac number, because 2100650505 - 2¹¹ = 2100648457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70021669 + ... + 70021698.

It is an arithmetic number, because the mean of its divisors is an integer number (420130104).

Almost surely, 2^2100650505 is an apocalyptic number.

It is an amenable number.

2100650505 is a deficient number, since it is larger than the sum of its proper divisors (1260390327).

2100650505 is a wasteful number, since it uses less digits than its factorization.

2100650505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140043375.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2100650505 is about 45832.8539914328. The cubic root of 2100650505 is about 1280.7113772337.

The spelling of 2100650505 in words is "two billion, one hundred million, six hundred fifty thousand, five hundred five".