78148555966 has 16 divisors (see below), whose sum is σ = 126244666800. Its totient is φ = 36067223808.

The previous prime is 78148555963. The next prime is 78148555973. The reversal of 78148555966 is 66955584187.

It is a super-2 number, since 2×78148555966² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78148555898 and 78148555907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78148555963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141390 + ... + 1207918.

It is an arithmetic number, because the mean of its divisors is an integer number (7890291675).

Almost surely, 2^78148555966 is an apocalyptic number.

78148555966 is a deficient number, since it is larger than the sum of its proper divisors (48096110834).

78148555966 is a wasteful number, since it uses less digits than its factorization.

78148555966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111723.

The product of its digits is 72576000, while the sum is 64.

The spelling of 78148555966 in words is "seventy-eight billion, one hundred forty-eight million, five hundred fifty-five thousand, nine hundred sixty-six".