858197317770 has 96 divisors (see below), whose sum is σ = 2409501249792. Its totient is φ = 210672855936.

The previous prime is 858197317727. The next prime is 858197317807. The reversal of 858197317770 is 77713791858.

It is a junction number, because it is equal to n+sod(n) for n = 858197317698 and 858197317707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 569932 + ... + 1428711.

It is an arithmetic number, because the mean of its divisors is an integer number (25098971352).

Almost surely, 2^858197317770 is an apocalyptic number.

858197317770 is an abundant number, since it is smaller than the sum of its proper divisors (1551303932022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

858197317770 is a wasteful number, since it uses less digits than its factorization.

858197317770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999036 (or 1999033 counting only the distinct ones).

The product of its (nonzero) digits is 20744640, while the sum is 63.

The spelling of 858197317770 in words is "eight hundred fifty-eight billion, one hundred ninety-seven million, three hundred seventeen thousand, seven hundred seventy".