850377780845 has 8 divisors (see below), whose sum is σ = 1022998110840. Its totient is φ = 678605708800.

The previous prime is 850377780767. The next prime is 850377780869. The reversal of 850377780845 is 548087773058.

It can be written as a sum of positive squares in 4 ways, for example, as 497311271209 + 353066509636 = 705203^2 + 594194^2 .

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

It is not a de Polignac number, because 850377780845 - 2²⁸ = 850109345389 is a prime.

It is a congruent number.

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, 212062280 + ... + 212066289.

It is an arithmetic number, because the mean of its divisors is an integer number (127874763855).

Almost surely, 2^850377780845 is an apocalyptic number.

It is an amenable number.

850377780845 is a deficient number, since it is larger than the sum of its proper divisors (172620329995).

850377780845 is a wasteful number, since it uses less digits than its factorization.

850377780845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424128975.

The product of its (nonzero) digits is 52684800, while the sum is 62.

The spelling of 850377780845 in words is "eight hundred fifty billion, three hundred seventy-seven million, seven hundred eighty thousand, eight hundred forty-five".