205897547612 has 24 divisors (see below), whose sum is σ = 361069077600. Its totient is φ = 102735159296.

The previous prime is 205897547593. The next prime is 205897547659. The reversal of 205897547612 is 216745798502.

It is a super-2 number, since 2×205897547612² (a number of 23 digits) contains 22 as substring.

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, 4162964 + ... + 4212132.

It is an arithmetic number, because the mean of its divisors is an integer number (15044544900).

Almost surely, 2^205897547612 is an apocalyptic number.

It is an amenable number.

205897547612 is a deficient number, since it is larger than the sum of its proper divisors (155171529988).

205897547612 is a wasteful number, since it uses less digits than its factorization.

205897547612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51325 (or 51323 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 205897547612 in words is "two hundred five billion, eight hundred ninety-seven million, five hundred forty-seven thousand, six hundred twelve".