200155115664 has 160 divisors (see below), whose sum is σ = 657115680000. Its totient is φ = 57141697536.

The previous prime is 200155115663. The next prime is 200155115681. The reversal of 200155115664 is 466511551002.

200155115664 is a `hidden beast` number, since 20 + 0 + 15 + 511 + 56 + 64 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (200155115663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3872262 + ... + 3923610.

It is an arithmetic number, because the mean of its divisors is an integer number (4106973000).

Almost surely, 2^200155115664 is an apocalyptic number.

200155115664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200155115664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328557840000).

200155115664 is an abundant number, since it is smaller than the sum of its proper divisors (456960564336).

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

200155115664 is a wasteful number, since it uses less digits than its factorization.

200155115664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52662 (or 52650 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

Adding to 200155115664 its reverse (466511551002), we get a palindrome (666666666666).

The spelling of 200155115664 in words is "two hundred billion, one hundred fifty-five million, one hundred fifteen thousand, six hundred sixty-four".