206225243136564 has 96 divisors (see below), whose sum is σ = 510355559540736. Its totient is φ = 64589266859520.

The previous prime is 206225243136527. The next prime is 206225243136611. The reversal of 206225243136564 is 465631342522602.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290536677 + ... + 291245619.

It is an arithmetic number, because the mean of its divisors is an integer number (5316203745216).

Almost surely, 2^{206225243136564} is an apocalyptic number.

It is an amenable number.

206225243136564 is an abundant number, since it is smaller than the sum of its proper divisors (304130316404172).

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

206225243136564 is a wasteful number, since it uses less digits than its factorization.

206225243136564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711365 (or 711363 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 51.

The spelling of 206225243136564 in words is "two hundred six trillion, two hundred twenty-five billion, two hundred forty-three million, one hundred thirty-six thousand, five hundred sixty-four".