870612138251228 has 24 divisors (see below), whose sum is σ = 1523744294823072. Its totient is φ = 435256627912704.

The previous prime is 870612138251183. The next prime is 870612138251239. The reversal of 870612138251228 is 822152831216078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514724476 + ... + 1515299132.

It is an arithmetic number, because the mean of its divisors is an integer number (63489345617628).

Almost surely, 2^{870612138251228} is an apocalyptic number.

It is an amenable number.

870612138251228 is a deficient number, since it is larger than the sum of its proper divisors (653132156571844).

870612138251228 is a wasteful number, since it uses less digits than its factorization.

870612138251228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617021 (or 617019 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 870612138251228 in words is "eight hundred seventy trillion, six hundred twelve billion, one hundred thirty-eight million, two hundred fifty-one thousand, two hundred twenty-eight".