65628385580 has 24 divisors (see below), whose sum is σ = 137939397120. Its totient is φ = 26228537600.

The previous prime is 65628385579. The next prime is 65628385609. The reversal of 65628385580 is 8558382656.

65628385580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×65628385580³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402445 + ... + 1448484.

It is an arithmetic number, because the mean of its divisors is an integer number (5747474880).

Almost surely, 2^65628385580 is an apocalyptic number.

It is an amenable number.

65628385580 is an abundant number, since it is smaller than the sum of its proper divisors (72311011540).

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

65628385580 is a wasteful number, since it uses less digits than its factorization.

65628385580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852089 (or 2852087 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 56.

The spelling of 65628385580 in words is "sixty-five billion, six hundred twenty-eight million, three hundred eighty-five thousand, five hundred eighty".