655021142642216 has 16 divisors (see below), whose sum is σ = 1403616734233440. Its totient is φ = 280723346846640.

The previous prime is 655021142642201. The next prime is 655021142642233. The reversal of 655021142642216 is 612246241120556.

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, 5848403059250 + ... + 5848403059361.

It is an arithmetic number, because the mean of its divisors is an integer number (87726045889590).

Almost surely, 2^{655021142642216} is an apocalyptic number.

It is an amenable number.

655021142642216 is an abundant number, since it is smaller than the sum of its proper divisors (748595591591224).

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

655021142642216 is a wasteful number, since it uses less digits than its factorization.

655021142642216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11696806118624 (or 11696806118620 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 655021142642216 in words is "six hundred fifty-five trillion, twenty-one billion, one hundred forty-two million, six hundred forty-two thousand, two hundred sixteen".