78628664316962 has 8 divisors (see below), whose sum is σ = 117943738820892. Its totient is φ = 39314084710000.

The previous prime is 78628664316913. The next prime is 78628664317039. The reversal of 78628664316962 is 26961346682687.

It can be written as a sum of positive squares in 2 ways, for example, as 77114408553361 + 1514255763601 = 8781481^2 + 1230551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×78628664316962³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78628664316962.

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 3 ways as a sum of consecutive naturals, for example, 123326789 + ... + 123962712.

Almost surely, 2^{78628664316962} is an apocalyptic number.

78628664316962 is a deficient number, since it is larger than the sum of its proper divisors (39315074503930).

78628664316962 is a wasteful number, since it uses less digits than its factorization.

78628664316962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247448484.

The product of its digits is 1504935936, while the sum is 74.

The spelling of 78628664316962 in words is "seventy-eight trillion, six hundred twenty-eight billion, six hundred sixty-four million, three hundred sixteen thousand, nine hundred sixty-two".