2278448478429 has 32 divisors (see below), whose sum is σ = 3177243463680. Its totient is φ = 1449614593152.

The previous prime is 2278448478413. The next prime is 2278448478437. The reversal of 2278448478429 is 9248748448722.

It is not a de Polignac number, because 2278448478429 - 2⁴ = 2278448478413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278448478529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54322264 + ... + 54364190.

It is an arithmetic number, because the mean of its divisors is an integer number (99288858240).

Almost surely, 2^{2278448478429} is an apocalyptic number.

It is an amenable number.

2278448478429 is a deficient number, since it is larger than the sum of its proper divisors (898794985251).

2278448478429 is a wasteful number, since it uses less digits than its factorization.

2278448478429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43729.

The product of its digits is 462422016, while the sum is 69.

The spelling of 2278448478429 in words is "two trillion, two hundred seventy-eight billion, four hundred forty-eight million, four hundred seventy-eight thousand, four hundred twenty-nine".