78414664338240 has 112 divisors (see below), whose sum is σ = 248970653655360. Its totient is φ = 20910233272320.

The previous prime is 78414664338229. The next prime is 78414664338253. The reversal of 78414664338240 is 4283346641487.

It is a super-2 number, since 2×78414664338240² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60647631 + ... + 61927089.

It is an arithmetic number, because the mean of its divisors is an integer number (2222952264780).

Almost surely, 2^{78414664338240} is an apocalyptic number.

It is an amenable number.

78414664338240 is an abundant number, since it is smaller than the sum of its proper divisors (170555989317120).

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

78414664338240 is a wasteful number, since it uses less digits than its factorization.

78414664338240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343320 (or 1343310 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 60.

The spelling of 78414664338240 in words is "seventy-eight trillion, four hundred fourteen billion, six hundred sixty-four million, three hundred thirty-eight thousand, two hundred forty".