842622861778 has 8 divisors (see below), whose sum is σ = 1304706366720. Its totient is φ = 407720739540.

The previous prime is 842622861643. The next prime is 842622861791. The reversal of 842622861778 is 877168226248.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6795345598 + ... + 6795345721.

It is an arithmetic number, because the mean of its divisors is an integer number (163088295840).

Almost surely, 2^842622861778 is an apocalyptic number.

842622861778 is a deficient number, since it is larger than the sum of its proper divisors (462083504942).

842622861778 is a wasteful number, since it uses less digits than its factorization.

842622861778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13590691352.

The product of its digits is 28901376, while the sum is 61.

The spelling of 842622861778 in words is "eight hundred forty-two billion, six hundred twenty-two million, eight hundred sixty-one thousand, seven hundred seventy-eight".