431742878478 has 12 divisors (see below), whose sum is σ = 935442903408. Its totient is φ = 143914292820.

The previous prime is 431742878473. The next prime is 431742878507. The reversal of 431742878478 is 874878247134.

431742878478 is a `hidden beast` number, since 4 + 3 + 1 + 74 + 28 + 78 + 478 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431742878473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11992857718 + ... + 11992857753.

It is an arithmetic number, because the mean of its divisors is an integer number (77953575284).

Almost surely, 2^431742878478 is an apocalyptic number.

431742878478 is an abundant number, since it is smaller than the sum of its proper divisors (503700024930).

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

431742878478 is a wasteful number, since it uses less digits than its factorization.

431742878478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23985715479 (or 23985715476 counting only the distinct ones).

The product of its digits is 67436544, while the sum is 63.

The spelling of 431742878478 in words is "four hundred thirty-one billion, seven hundred forty-two million, eight hundred seventy-eight thousand, four hundred seventy-eight".