78444225474 has 32 divisors (see below), whose sum is σ = 169609145280. Its totient is φ = 24102349632.

The previous prime is 78444225473. The next prime is 78444225481. The reversal of 78444225474 is 47452244487.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78444225473) 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 15 ways as a sum of consecutive naturals, for example, 9294529 + ... + 9302964.

It is an arithmetic number, because the mean of its divisors is an integer number (5300285790).

Almost surely, 2^78444225474 is an apocalyptic number.

78444225474 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

78444225474 is an abundant number, since it is smaller than the sum of its proper divisors (91164919806).

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

78444225474 is a wasteful number, since it uses less digits than its factorization.

78444225474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597554.

The product of its digits is 8028160, while the sum is 51.

The spelling of 78444225474 in words is "seventy-eight billion, four hundred forty-four million, two hundred twenty-five thousand, four hundred seventy-four".