244456781478 has 64 divisors (see below), whose sum is σ = 601996749312. Its totient is φ = 64444584960.

The previous prime is 244456781449. The next prime is 244456781489. The reversal of 244456781478 is 874187654442.

It is a happy number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1200150 + ... + 1388982.

It is an arithmetic number, because the mean of its divisors is an integer number (9406199208).

Almost surely, 2^244456781478 is an apocalyptic number.

244456781478 is an abundant number, since it is smaller than the sum of its proper divisors (357539967834).

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

244456781478 is a wasteful number, since it uses less digits than its factorization.

244456781478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191229.

The product of its digits is 48168960, while the sum is 60.

The spelling of 244456781478 in words is "two hundred forty-four billion, four hundred fifty-six million, seven hundred eighty-one thousand, four hundred seventy-eight".