78429012480 has 1280 divisors, whose sum is σ = 353187394560. Its totient is φ = 16052649984.

The previous prime is 78429012479. The next prime is 78429012551. The reversal of 78429012480 is 8421092487.

78429012480 is a `hidden beast` number, since 7 + 84 + 2 + 90 + 1 + 2 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a super-2 number, since 2×78429012480² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 232726872 + ... + 232727208.

It is an arithmetic number, because the mean of its divisors is an integer number (275927652).

Almost surely, 2^78429012480 is an apocalyptic number.

78429012480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78429012480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176593697280).

78429012480 is an abundant number, since it is smaller than the sum of its proper divisors (274758382080).

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

78429012480 is a wasteful number, since it uses less digits than its factorization.

78429012480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 78429012480 in words is "seventy-eight billion, four hundred twenty-nine million, twelve thousand, four hundred eighty".