847212842578 has 32 divisors (see below), whose sum is σ = 1335886079616. Its totient is φ = 402461716608.

The previous prime is 847212842561. The next prime is 847212842599. The reversal of 847212842578 is 875248212748.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12161875 + ... + 12231337.

It is an arithmetic number, because the mean of its divisors is an integer number (41746439988).

Almost surely, 2^847212842578 is an apocalyptic number.

847212842578 is a deficient number, since it is larger than the sum of its proper divisors (488673237038).

847212842578 is a wasteful number, since it uses less digits than its factorization.

847212842578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73378.

The product of its digits is 16056320, while the sum is 58.

The spelling of 847212842578 in words is "eight hundred forty-seven billion, two hundred twelve million, eight hundred forty-two thousand, five hundred seventy-eight".