9875854449478 has 16 divisors (see below), whose sum is σ = 14827592533104. Its totient is φ = 4933323934560.

The previous prime is 9875854449463. The next prime is 9875854449481. The reversal of 9875854449478 is 8749444585789.

It is a happy number.

It is a super-2 number, since 2×9875854449478² (a number of 27 digits) contains 22 as substring.

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, 76219668 + ... + 76349128.

It is an arithmetic number, because the mean of its divisors is an integer number (926724533319).

Almost surely, 2^{9875854449478} is an apocalyptic number.

9875854449478 is a deficient number, since it is larger than the sum of its proper divisors (4951738083626).

9875854449478 is a wasteful number, since it uses less digits than its factorization.

9875854449478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164727.

The product of its digits is 13005619200, while the sum is 82.

The spelling of 9875854449478 in words is "nine trillion, eight hundred seventy-five billion, eight hundred fifty-four million, four hundred forty-nine thousand, four hundred seventy-eight".