65555050000 has 120 divisors (see below), whose sum is σ = 173189790144. Its totient is φ = 23838000000.

The previous prime is 65555049997. The next prime is 65555050007. The reversal of 65555050000 is 5055556.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65555050007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490405 + ... + 609595.

Almost surely, 2^65555050000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65555050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86594895072).

65555050000 is an abundant number, since it is smaller than the sum of its proper divisors (107634740144).

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

65555050000 is a wasteful number, since it uses less digits than its factorization.

65555050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119235 (or 119209 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The spelling of 65555050000 in words is "sixty-five billion, five hundred fifty-five million, fifty thousand".