61222117383856 has 160 divisors (see below), whose sum is σ = 142792574815296. Its totient is φ = 25054328832000.

The previous prime is 61222117383829. The next prime is 61222117383881. The reversal of 61222117383856 is 65838371122216.

It is a junction number, because it is equal to n+sod(n) for n = 61222117383797 and 61222117383806.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356103036 + ... + 356274916.

Almost surely, 2^{61222117383856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61222117383856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71396287407648).

61222117383856 is an abundant number, since it is smaller than the sum of its proper divisors (81570457431440).

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

61222117383856 is a wasteful number, since it uses less digits than its factorization.

61222117383856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175751 (or 175745 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 61222117383856 in words is "sixty-one trillion, two hundred twenty-two billion, one hundred seventeen million, three hundred eighty-three thousand, eight hundred fifty-six".