221430627653355 has 24 divisors (see below), whose sum is σ = 383897128816032. Its totient is φ = 118070476015104.

The previous prime is 221430627653351. The next prime is 221430627653369. The reversal of 221430627653355 is 553356726034122.

221430627653355 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 3 + 0 + 627 + 6 + 5 + 3 + 3 + 5 + 5 = 666.

It is not a de Polignac number, because 221430627653355 - 2² = 221430627653351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221430627653351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538515814 + ... + 538926843.

It is an arithmetic number, because the mean of its divisors is an integer number (15995713700668).

Almost surely, 2^{221430627653355} is an apocalyptic number.

221430627653355 is a deficient number, since it is larger than the sum of its proper divisors (162466501162677).

221430627653355 is a wasteful number, since it uses less digits than its factorization.

221430627653355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077447235 (or 1077447232 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 54.

The spelling of 221430627653355 in words is "two hundred twenty-one trillion, four hundred thirty billion, six hundred twenty-seven million, six hundred fifty-three thousand, three hundred fifty-five".