221533661055453 has 8 divisors (see below), whose sum is σ = 295399779971328. Its totient is φ = 147678324754944.

The previous prime is 221533661055397. The next prime is 221533661055467. The reversal of 221533661055453 is 354550166335122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221533661055453 - 2⁴⁰ = 220434149427677 is a prime.

It is a super-3 number, since 3×221533661055453³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221533661055396 and 221533661055405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221533661055253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695605901 + ... + 2695688082.

It is an arithmetic number, because the mean of its divisors is an integer number (36924972496416).

Almost surely, 2^{221533661055453} is an apocalyptic number.

It is an amenable number.

221533661055453 is a deficient number, since it is larger than the sum of its proper divisors (73866118915875).

221533661055453 is a wasteful number, since it uses less digits than its factorization.

221533661055453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391307683.

The product of its (nonzero) digits is 9720000, while the sum is 51.

The spelling of 221533661055453 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, six hundred sixty-one million, fifty-five thousand, four hundred fifty-three".