891876950056 has 8 divisors (see below), whose sum is σ = 1672269281370. Its totient is φ = 445938475024.

The previous prime is 891876950011. The next prime is 891876950059. The reversal of 891876950056 is 650059678198.

It can be written as a sum of positive squares in only one way, i.e., 674845820100 + 217031129956 = 821490^2 + 465866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 891876950056.

It is not an unprimeable number, because it can be changed into a prime (891876950059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55742309371 + ... + 55742309386.

Almost surely, 2^891876950056 is an apocalyptic number.

It is an amenable number.

891876950056 is a deficient number, since it is larger than the sum of its proper divisors (780392331314).

891876950056 is a wasteful number, since it uses less digits than its factorization.

891876950056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111484618763 (or 111484618759 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 64.

The spelling of 891876950056 in words is "eight hundred ninety-one billion, eight hundred seventy-six million, nine hundred fifty thousand, fifty-six".