281264448478 has 64 divisors (see below), whose sum is σ = 474916478400. Its totient is φ = 124108047360.

The previous prime is 281264448473. The next prime is 281264448527. The reversal of 281264448478 is 874844462182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281264448473) 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, 8311200 + ... + 8344972.

It is an arithmetic number, because the mean of its divisors is an integer number (7420569975).

Almost surely, 2^281264448478 is an apocalyptic number.

281264448478 is a deficient number, since it is larger than the sum of its proper divisors (193652029922).

281264448478 is a wasteful number, since it uses less digits than its factorization.

281264448478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33997.

The product of its digits is 22020096, while the sum is 58.

The spelling of 281264448478 in words is "two hundred eighty-one billion, two hundred sixty-four million, four hundred forty-eight thousand, four hundred seventy-eight".