78214538083420 has 48 divisors (see below), whose sum is σ = 167148400049568. Its totient is φ = 30737175183360.

The previous prime is 78214538083403. The next prime is 78214538083421. The reversal of 78214538083420 is 2438083541287.

It is a super-2 number, since 2×78214538083420² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78214538083421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 103849686 + ... + 104600125.

It is an arithmetic number, because the mean of its divisors is an integer number (3482258334366).

Almost surely, 2^{78214538083420} is an apocalyptic number.

It is an amenable number.

78214538083420 is an abundant number, since it is smaller than the sum of its proper divisors (88933861966148).

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

78214538083420 is a wasteful number, since it uses less digits than its factorization.

78214538083420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208450150 (or 208450148 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 78214538083420 in words is "seventy-eight trillion, two hundred fourteen billion, five hundred thirty-eight million, eighty-three thousand, four hundred twenty".