662821655363616 has 48 divisors (see below), whose sum is σ = 1988464966092864. Its totient is φ = 189377615817984.

The previous prime is 662821655363579. The next prime is 662821655363627. The reversal of 662821655363616 is 616363556128266.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493170873855 + ... + 493170875198.

It is an arithmetic number, because the mean of its divisors is an integer number (41426353460268).

Almost surely, 2^{662821655363616} is an apocalyptic number.

It is an amenable number.

662821655363616 is an abundant number, since it is smaller than the sum of its proper divisors (1325643310729248).

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

662821655363616 is a wasteful number, since it uses less digits than its factorization.

662821655363616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986341749073 (or 986341749065 counting only the distinct ones).

The product of its digits is 335923200, while the sum is 66.

The spelling of 662821655363616 in words is "six hundred sixty-two trillion, eight hundred twenty-one billion, six hundred fifty-five million, three hundred sixty-three thousand, six hundred sixteen".