853861856948 has 24 divisors (see below), whose sum is σ = 1498633649352. Its totient is φ = 425681045504.

The previous prime is 853861856929. The next prime is 853861856987. The reversal of 853861856948 is 849658168358.

It can be written as a sum of positive squares in 4 ways, for example, as 1197990544 + 852663866404 = 34612^2 + 923398^2 .

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, 19572536 + ... + 19616112.

It is an arithmetic number, because the mean of its divisors is an integer number (62443068723).

Almost surely, 2^853861856948 is an apocalyptic number.

It is an amenable number.

853861856948 is a deficient number, since it is larger than the sum of its proper divisors (644771792404).

853861856948 is a wasteful number, since it uses less digits than its factorization.

853861856948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57811 (or 57809 counting only the distinct ones).

The product of its digits is 398131200, while the sum is 71.

The spelling of 853861856948 in words is "eight hundred fifty-three billion, eight hundred sixty-one million, eight hundred fifty-six thousand, nine hundred forty-eight".