12434789478 has 16 divisors (see below), whose sum is σ = 24879974400. Its totient is φ = 4143197256.

The previous prime is 12434789461. The next prime is 12434789513. The reversal of 12434789478 is 87498743421.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417550 + ... + 446337.

It is an arithmetic number, because the mean of its divisors is an integer number (1554998400).

Almost surely, 2^12434789478 is an apocalyptic number.

12434789478 is an abundant number, since it is smaller than the sum of its proper divisors (12445184922).

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

12434789478 is a wasteful number, since it uses less digits than its factorization.

12434789478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866291.

The product of its digits is 10838016, while the sum is 57.

The spelling of 12434789478 in words is "twelve billion, four hundred thirty-four million, seven hundred eighty-nine thousand, four hundred seventy-eight".