13541540402 has 12 divisors (see below), whose sum is σ = 21994987770. Its totient is φ = 6249941568.

The previous prime is 13541540399. The next prime is 13541540413. The reversal of 13541540402 is 20404514531.

It can be written as a sum of positive squares in 3 ways, for example, as 5740941361 + 7800599041 = 75769^2 + 88321^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20031527 + ... + 20032202.

Almost surely, 2^13541540402 is an apocalyptic number.

13541540402 is a deficient number, since it is larger than the sum of its proper divisors (8453447368).

13541540402 is a wasteful number, since it uses less digits than its factorization.

13541540402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40063757 (or 40063744 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 13541540402 in words is "thirteen billion, five hundred forty-one million, five hundred forty thousand, four hundred two".