78530826250666 has 32 divisors (see below), whose sum is σ = 124093833494400. Its totient is φ = 37169485597440.

The previous prime is 78530826250619. The next prime is 78530826250673. The reversal of 78530826250666 is 66605262803587.

It is a super-2 number, since 2×78530826250666² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78530826250598 and 78530826250607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267118371 + ... + 267412201.

It is an arithmetic number, because the mean of its divisors is an integer number (3877932296700).

Almost surely, 2^{78530826250666} is an apocalyptic number.

78530826250666 is a deficient number, since it is larger than the sum of its proper divisors (45563007243734).

78530826250666 is a wasteful number, since it uses less digits than its factorization.

78530826250666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299374.

The product of its (nonzero) digits is 174182400, while the sum is 64.

The spelling of 78530826250666 in words is "seventy-eight trillion, five hundred thirty billion, eight hundred twenty-six million, two hundred fifty thousand, six hundred sixty-six".