850909690905 has 64 divisors (see below), whose sum is σ = 1383674572800. Its totient is φ = 446477011200.

The previous prime is 850909690903. The next prime is 850909690973. The reversal of 850909690905 is 509096909058.

850909690905 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 850909690905 - 2¹ = 850909690903 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (850909690903) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 252418870 + ... + 252422240.

It is an arithmetic number, because the mean of its divisors is an integer number (21619915200).

Almost surely, 2^850909690905 is an apocalyptic number.

It is an amenable number.

850909690905 is a deficient number, since it is larger than the sum of its proper divisors (532764881895).

850909690905 is a wasteful number, since it uses less digits than its factorization.

850909690905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502.

The product of its (nonzero) digits is 7873200, while the sum is 60.

The spelling of 850909690905 in words is "eight hundred fifty billion, nine hundred nine million, six hundred ninety thousand, nine hundred five".