65155034560 has 672 divisors, whose sum is σ = 205189165440. Its totient is φ = 19269550080.

The previous prime is 65155034551. The next prime is 65155034603. The reversal of 65155034560 is 6543055156.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 732078996 + ... + 732079084.

It is an arithmetic number, because the mean of its divisors is an integer number (305341020).

Almost surely, 2^65155034560 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 65155034560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102594582720).

65155034560 is an abundant number, since it is smaller than the sum of its proper divisors (140034130880).

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

65155034560 is a wasteful number, since it uses less digits than its factorization.

65155034560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 65155034560 in words is "sixty-five billion, one hundred fifty-five million, thirty-four thousand, five hundred sixty".