78667660476 has 36 divisors (see below), whose sum is σ = 199032491112. Its totient is φ = 26199064224.

The previous prime is 78667660459. The next prime is 78667660483. The reversal of 78667660476 is 67406676687.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 937950 + ... + 1018373.

Almost surely, 2^78667660476 is an apocalyptic number.

It is an amenable number.

78667660476 is an abundant number, since it is smaller than the sum of its proper divisors (120364830636).

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

78667660476 is a wasteful number, since it uses less digits than its factorization.

78667660476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957450 (or 1957445 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 63.

The spelling of 78667660476 in words is "seventy-eight billion, six hundred sixty-seven million, six hundred sixty thousand, four hundred seventy-six".