78218355045414 has 32 divisors (see below), whose sum is σ = 169120767674880. Its totient is φ = 24032951193312.

The previous prime is 78218355045409. The next prime is 78218355045421. The reversal of 78218355045414 is 41454055381287.

It is a super-2 number, since 2×78218355045414² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 15 ways as a sum of consecutive naturals, for example, 9271967694 + ... + 9271976129.

It is an arithmetic number, because the mean of its divisors is an integer number (5285023989840).

Almost surely, 2^{78218355045414} is an apocalyptic number.

78218355045414 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

78218355045414 is an abundant number, since it is smaller than the sum of its proper divisors (90902412629466).

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

78218355045414 is a wasteful number, since it uses less digits than its factorization.

78218355045414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18543943884.

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 78218355045414 in words is "seventy-eight trillion, two hundred eighteen billion, three hundred fifty-five million, forty-five thousand, four hundred fourteen".