222991676460 has 648 divisors, whose sum is σ = 833134695120. Its totient is φ = 49919369472.

The previous prime is 222991676443. The next prime is 222991676477. The reversal of 222991676460 is 64676199222.

222991676460 is a `hidden beast` number, since 2 + 2 + 29 + 91 + 6 + 76 + 460 = 666.

It is an interprime number because it is at equal distance from previous prime (222991676443) and next prime (222991676477).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 222991676397 and 222991676406.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 828965206 + ... + 828965474.

It is an arithmetic number, because the mean of its divisors is an integer number (1285701690).

Almost surely, 2^222991676460 is an apocalyptic number.

222991676460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222991676460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416567347560).

222991676460 is an abundant number, since it is smaller than the sum of its proper divisors (610143018660).

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

222991676460 is a wasteful number, since it uses less digits than its factorization.

222991676460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 222991676460 in words is "two hundred twenty-two billion, nine hundred ninety-one million, six hundred seventy-six thousand, four hundred sixty".