78353407424 has 56 divisors (see below), whose sum is σ = 163092676608. Its totient is φ = 37277039360.

The previous prime is 78353407423. The next prime is 78353407427. The reversal of 78353407424 is 42470435387.

It is a super-2 number, since 2×78353407424² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78353407423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141809 + ... + 420495.

Almost surely, 2^78353407424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78353407424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81546338304).

78353407424 is an abundant number, since it is smaller than the sum of its proper divisors (84739269184).

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

78353407424 is a wasteful number, since it uses less digits than its factorization.

78353407424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278913 (or 278903 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 78353407424 in words is "seventy-eight billion, three hundred fifty-three million, four hundred seven thousand, four hundred twenty-four".