65855342280 has 512 divisors, whose sum is σ = 252401909760. Its totient is φ = 13371678720.

The previous prime is 65855342269. The next prime is 65855342341. The reversal of 65855342280 is 8224355856.

It is a super-2 number, since 2×65855342280² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 76843612 + ... + 76844468.

It is an arithmetic number, because the mean of its divisors is an integer number (492972480).

Almost surely, 2^65855342280 is an apocalyptic number.

65855342280 is a gapful number since it is divisible by the number (60) 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 65855342280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126200954880).

65855342280 is an abundant number, since it is smaller than the sum of its proper divisors (186546567480).

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

65855342280 is a wasteful number, since it uses less digits than its factorization.

65855342280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 65855342280 in words is "sixty-five billion, eight hundred fifty-five million, three hundred forty-two thousand, two hundred eighty".