4374778444446 has 32 divisors (see below), whose sum is σ = 8898052849920. Its totient is φ = 1433511257024.

The previous prime is 4374778444433. The next prime is 4374778444447. The reversal of 4374778444446 is 6444448774734.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4374778444447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19853551 + ... + 20072693.

It is an arithmetic number, because the mean of its divisors is an integer number (278064151560).

Almost surely, 2^{4374778444446} is an apocalyptic number.

4374778444446 is an abundant number, since it is smaller than the sum of its proper divisors (4523274405474).

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

4374778444446 is a wasteful number, since it uses less digits than its factorization.

4374778444446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275600.

The product of its digits is 809238528, while the sum is 66.

The spelling of 4374778444446 in words is "four trillion, three hundred seventy-four billion, seven hundred seventy-eight million, four hundred forty-four thousand, four hundred forty-six".