65555302140 has 144 divisors (see below), whose sum is σ = 216535082400. Its totient is φ = 15990234624.

The previous prime is 65555302133. The next prime is 65555302147. The reversal of 65555302140 is 4120355556.

65555302140 is a `hidden beast` number, since 65 + 5 + 5 + 530 + 21 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (65555302133) and next prime (65555302147).

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

It is a junction number, because it is equal to n+sod(n) for n = 65555302095 and 65555302104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65555302147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231307 + ... + 429666.

It is an arithmetic number, because the mean of its divisors is an integer number (1503715850).

Almost surely, 2^65555302140 is an apocalyptic number.

65555302140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65555302140 is an abundant number, since it is smaller than the sum of its proper divisors (150979780260).

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

65555302140 is a wasteful number, since it uses less digits than its factorization.

65555302140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661036 (or 661031 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 65555302140 its reverse (4120355556), we get a palindrome (69675657696).

The spelling of 65555302140 in words is "sixty-five billion, five hundred fifty-five million, three hundred two thousand, one hundred forty".