221615596896 has 48 divisors (see below), whose sum is σ = 612358891200. Its totient is φ = 69983872128.

The previous prime is 221615596889. The next prime is 221615596927. The reversal of 221615596896 is 698695516122.

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

It is a super-2 number, since 2×221615596896² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60748066 + ... + 60751713.

It is an arithmetic number, because the mean of its divisors is an integer number (12757476900).

Almost surely, 2^221615596896 is an apocalyptic number.

It is an amenable number.

221615596896 is an abundant number, since it is smaller than the sum of its proper divisors (390743294304).

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

221615596896 is a wasteful number, since it uses less digits than its factorization.

221615596896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121499811 (or 121499803 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 60.

The spelling of 221615596896 in words is "two hundred twenty-one billion, six hundred fifteen million, five hundred ninety-six thousand, eight hundred ninety-six".