13540430434 has 8 divisors (see below), whose sum is σ = 20490386220. Its totient is φ = 6710301696.

The previous prime is 13540430413. The next prime is 13540430443. The reversal of 13540430434 is 43403404531.

It can be written as a sum of positive squares in 2 ways, for example, as 8225583025 + 5314847409 = 90695^2 + 72903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13540430396 and 13540430405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29956479 + ... + 29956930.

Almost surely, 2^13540430434 is an apocalyptic number.

13540430434 is a deficient number, since it is larger than the sum of its proper divisors (6949955786).

13540430434 is a wasteful number, since it uses less digits than its factorization.

13540430434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59913524.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 13540430434 its reverse (43403404531), we get a palindrome (56943834965).

The spelling of 13540430434 in words is "thirteen billion, five hundred forty million, four hundred thirty thousand, four hundred thirty-four".