846519121872 has 30 divisors (see below), whose sum is σ = 2369077820642. Its totient is φ = 282173040576.

The previous prime is 846519121849. The next prime is 846519121879. The reversal of 846519121872 is 278121915648.

846519121872 is a `hidden beast` number, since 8 + 46 + 519 + 1 + 2 + 1 + 87 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 811015518096 + 35503603776 = 900564^2 + 188424^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846519121879) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2939302363 + ... + 2939302650.

Almost surely, 2^846519121872 is an apocalyptic number.

It is an amenable number.

846519121872 is an abundant number, since it is smaller than the sum of its proper divisors (1522558698770).

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

846519121872 is a wasteful number, since it uses less digits than its factorization.

846519121872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878605027 (or 5878605018 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 846519121872 in words is "eight hundred forty-six billion, five hundred nineteen million, one hundred twenty-one thousand, eight hundred seventy-two".