78206518010 has 16 divisors (see below), whose sum is σ = 141549480072. Its totient is φ = 31109774400.

The previous prime is 78206517989. The next prime is 78206518037. The reversal of 78206518010 is 1081560287.

It can be written as a sum of positive squares in 4 ways, for example, as 18722722561 + 59483795449 = 136831^2 + 243893^2 .

It is a super-2 number, since 2×78206518010² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 21602201 + ... + 21605820.

Almost surely, 2^78206518010 is an apocalyptic number.

78206518010 is a deficient number, since it is larger than the sum of its proper divisors (63342962062).

78206518010 is a wasteful number, since it uses less digits than its factorization.

78206518010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43208209.

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 78206518010 in words is "seventy-eight billion, two hundred six million, five hundred eighteen thousand, ten".