13425432378 has 32 divisors (see below), whose sum is σ = 27234447360. Its totient is φ = 4411396080.

The previous prime is 13425432331. The next prime is 13425432379. The reversal of 13425432378 is 87323452431.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13425432379) 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, 276651 + ... + 321537.

It is an arithmetic number, because the mean of its divisors is an integer number (851076480).

Almost surely, 2^13425432378 is an apocalyptic number.

13425432378 is an abundant number, since it is smaller than the sum of its proper divisors (13809014982).

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

13425432378 is a wasteful number, since it uses less digits than its factorization.

13425432378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45602.

The product of its digits is 483840, while the sum is 42.

The spelling of 13425432378 in words is "thirteen billion, four hundred twenty-five million, four hundred thirty-two thousand, three hundred seventy-eight".