200511072864 has 144 divisors (see below), whose sum is σ = 626106066768. Its totient is φ = 62905393152.

The previous prime is 200511072851. The next prime is 200511072889. The reversal of 200511072864 is 468270115002.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626217 + ... + 890600.

It is an arithmetic number, because the mean of its divisors is an integer number (4347958797).

Almost surely, 2^200511072864 is an apocalyptic number.

200511072864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

200511072864 is an abundant number, since it is smaller than the sum of its proper divisors (425594993904).

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

200511072864 is a wasteful number, since it uses less digits than its factorization.

200511072864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516859 (or 1516839 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 200511072864 its reverse (468270115002), we get a palindrome (668781187866).

The spelling of 200511072864 in words is "two hundred billion, five hundred eleven million, seventy-two thousand, eight hundred sixty-four".