205333421143551 has 32 divisors (see below), whose sum is σ = 281020788851712. Its totient is φ = 133312425903360.

The previous prime is 205333421143523. The next prime is 205333421143553. The reversal of 205333421143551 is 155341124333502.

It is not a de Polignac number, because 205333421143551 - 2¹⁹ = 205333420619263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205333421143553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98929131 + ... + 100983363.

It is an arithmetic number, because the mean of its divisors is an integer number (8781899651616).

Almost surely, 2^{205333421143551} is an apocalyptic number.

205333421143551 is a deficient number, since it is larger than the sum of its proper divisors (75687367708161).

205333421143551 is a wasteful number, since it uses less digits than its factorization.

205333421143551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059703.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 205333421143551 in words is "two hundred five trillion, three hundred thirty-three billion, four hundred twenty-one million, one hundred forty-three thousand, five hundred fifty-one".