875474748981 has 64 divisors (see below), whose sum is σ = 1499423016960. Its totient is φ = 494517104640.

The previous prime is 875474748949. The next prime is 875474748989. The reversal of 875474748981 is 189847474578.

875474748981 is a `hidden beast` number, since 8 + 7 + 5 + 474 + 74 + 8 + 9 + 81 = 666.

It is not a de Polignac number, because 875474748981 - 2⁵ = 875474748949 is a prime.

It is a super-2 number, since 2×875474748981² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875474748989) 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, 6294270 + ... + 6431856.

It is an arithmetic number, because the mean of its divisors is an integer number (23428484640).

Almost surely, 2^875474748981 is an apocalyptic number.

It is an amenable number.

875474748981 is a deficient number, since it is larger than the sum of its proper divisors (623948267979).

875474748981 is a wasteful number, since it uses less digits than its factorization.

875474748981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137991 (or 137985 counting only the distinct ones).

The product of its digits is 505774080, while the sum is 72.

The spelling of 875474748981 in words is "eight hundred seventy-five billion, four hundred seventy-four million, seven hundred forty-eight thousand, nine hundred eighty-one".