205461434664620 has 48 divisors (see below), whose sum is σ = 431572212115968. Its totient is φ = 82164918386880.

The previous prime is 205461434664617. The next prime is 205461434664727. The reversal of 205461434664620 is 26466434164502.

It is a super-2 number, since 2×205461434664620² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3823863155 + ... + 3823916885.

It is an arithmetic number, because the mean of its divisors is an integer number (8991087752416).

Almost surely, 2^{205461434664620} is an apocalyptic number.

205461434664620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205461434664620 is an abundant number, since it is smaller than the sum of its proper divisors (226110777451348).

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

205461434664620 is a wasteful number, since it uses less digits than its factorization.

205461434664620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95910 (or 95908 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 53.

The spelling of 205461434664620 in words is "two hundred five trillion, four hundred sixty-one billion, four hundred thirty-four million, six hundred sixty-four thousand, six hundred twenty".