205451213532 has 24 divisors (see below), whose sum is σ = 479476373376. Its totient is φ = 68470850928.

The previous prime is 205451213491. The next prime is 205451213549. The reversal of 205451213532 is 235312154502.

It is a super-2 number, since 2×205451213532² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205451213493 and 205451213502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544328 + ... + 1672079.

It is an arithmetic number, because the mean of its divisors is an integer number (19978182224).

Almost surely, 2^205451213532 is an apocalyptic number.

It is an amenable number.

205451213532 is an abundant number, since it is smaller than the sum of its proper divisors (274025159844).

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

205451213532 is a wasteful number, since it uses less digits than its factorization.

205451213532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221737 (or 3221735 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 205451213532 in words is "two hundred five billion, four hundred fifty-one million, two hundred thirteen thousand, five hundred thirty-two".