66077825575830 has 16 divisors (see below), whose sum is σ = 158586781382064. Its totient is φ = 17620753486880.

The previous prime is 66077825575799. The next prime is 66077825575871. The reversal of 66077825575830 is 3857552877066.

It is a congruent number.

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, 1101297092901 + ... + 1101297092960.

It is an arithmetic number, because the mean of its divisors is an integer number (9911673836379).

Almost surely, 2^{66077825575830} is an apocalyptic number.

66077825575830 is an abundant number, since it is smaller than the sum of its proper divisors (92508955806234).

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

66077825575830 is a wasteful number, since it uses less digits than its factorization.

66077825575830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202594185871.

The product of its (nonzero) digits is 592704000, while the sum is 69.

The spelling of 66077825575830 in words is "sixty-six trillion, seventy-seven billion, eight hundred twenty-five million, five hundred seventy-five thousand, eight hundred thirty".