221655570360054 has 16 divisors (see below), whose sum is σ = 457611500098560. Its totient is φ = 71501796890280.

The previous prime is 221655570359959. The next prime is 221655570360083. The reversal of 221655570360054 is 450063075556122.

It is a super-3 number, since 3×221655570360054³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221655570359979 and 221655570360006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595848307234 + ... + 595848307605.

It is an arithmetic number, because the mean of its divisors is an integer number (28600718756160).

Almost surely, 2^{221655570360054} is an apocalyptic number.

221655570360054 is an abundant number, since it is smaller than the sum of its proper divisors (235955929738506).

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

221655570360054 is a wasteful number, since it uses less digits than its factorization.

221655570360054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191696614875.

The product of its (nonzero) digits is 7560000, while the sum is 51.

The spelling of 221655570360054 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, five hundred seventy million, three hundred sixty thousand, fifty-four".