65628374580 has 192 divisors, whose sum is σ = 205546172160. Its totient is φ = 17384025600.

The previous prime is 65628374569. The next prime is 65628374599. The reversal of 65628374580 is 8547382656.

65628374580 is a `hidden beast` number, since 6 + 5 + 6 + 28 + 37 + 4 + 580 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 80922375 + ... + 80923185.

It is an arithmetic number, because the mean of its divisors is an integer number (1070552980).

Almost surely, 2^65628374580 is an apocalyptic number.

65628374580 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 65628374580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102773086080).

65628374580 is an abundant number, since it is smaller than the sum of its proper divisors (139917797580).

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

65628374580 is a wasteful number, since it uses less digits than its factorization.

65628374580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1639 counting only the distinct ones).

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

The spelling of 65628374580 in words is "sixty-five billion, six hundred twenty-eight million, three hundred seventy-four thousand, five hundred eighty".