78330664575 has 48 divisors (see below), whose sum is σ = 143923050240. Its totient is φ = 41768598240.

The previous prime is 78330664553. The next prime is 78330664627. The reversal of 78330664575 is 57546603387.

78330664575 is a `hidden beast` number, since 7 + 8 + 3 + 3 + 0 + 6 + 64 + 575 = 666.

It is not a de Polignac number, because 78330664575 - 2⁵ = 78330664543 is a prime.

It is a super-2 number, since 2×78330664575² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7192084 + ... + 7202966.

It is an arithmetic number, because the mean of its divisors is an integer number (2998396880).

Almost surely, 2^78330664575 is an apocalyptic number.

78330664575 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78330664575 is a deficient number, since it is larger than the sum of its proper divisors (65592385665).

78330664575 is a wasteful number, since it uses less digits than its factorization.

78330664575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21565 (or 21554 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 78330664575 in words is "seventy-eight billion, three hundred thirty million, six hundred sixty-four thousand, five hundred seventy-five".