222536661540 has 48 divisors (see below), whose sum is σ = 624221422272. Its totient is φ = 59236560256.

The previous prime is 222536661499. The next prime is 222536661601. The reversal of 222536661540 is 45166635222.

It is a junction number, because it is equal to n+sod(n) for n = 222536661492 and 222536661501.

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, 3295974 + ... + 3362813.

It is an arithmetic number, because the mean of its divisors is an integer number (13004612964).

Almost surely, 2^222536661540 is an apocalyptic number.

222536661540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222536661540 is an abundant number, since it is smaller than the sum of its proper divisors (401684760732).

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

222536661540 is a wasteful number, since it uses less digits than its factorization.

222536661540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6659356 (or 6659354 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 222536661540 in words is "two hundred twenty-two billion, five hundred thirty-six million, six hundred sixty-one thousand, five hundred forty".