65228385672 has 180 divisors, whose sum is σ = 186510302055. Its totient is φ = 21298533984.

The previous prime is 65228385623. The next prime is 65228385697. The reversal of 65228385672 is 27658382256.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

65228385672 is a `hidden beast` number, since 6 + 52 + 28 + 3 + 8 + 567 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32614192836 + 32614192836 = 180594^2 + 180594^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=180594.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 513609273 + ... + 513609399.

Almost surely, 2^65228385672 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 65228385672

65228385672 is an abundant number, since it is smaller than the sum of its proper divisors (121281916383).

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

65228385672 is an equidigital number, since it uses as much as digits as its factorization.

65228385672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 211 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 65228385672 in words is "sixty-five billion, two hundred twenty-eight million, three hundred eighty-five thousand, six hundred seventy-two".