78218850801 has 32 divisors (see below), whose sum is σ = 129369899008. Its totient is φ = 40933408320.

The previous prime is 78218850791. The next prime is 78218850803. The reversal of 78218850801 is 10805881287.

It is not a de Polignac number, because 78218850801 - 2⁶ = 78218850737 is a prime.

It is a super-2 number, since 2×78218850801² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78218850803) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1093345 + ... + 1162686.

It is an arithmetic number, because the mean of its divisors is an integer number (4042809344).

Almost surely, 2^78218850801 is an apocalyptic number.

It is an amenable number.

78218850801 is a deficient number, since it is larger than the sum of its proper divisors (51151048207).

78218850801 is a wasteful number, since it uses less digits than its factorization.

78218850801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256181.

The product of its (nonzero) digits is 286720, while the sum is 48.

The spelling of 78218850801 in words is "seventy-eight billion, two hundred eighteen million, eight hundred fifty thousand, eight hundred one".