13215410402 has 4 divisors (see below), whose sum is σ = 19823115606. Its totient is φ = 6607705200.

The previous prime is 13215410401. The next prime is 13215410443. The reversal of 13215410402 is 20401451231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13199482321 + 15928081 = 114889^2 + 3991^2 .

It is not an unprimeable number, because it can be changed into a prime (13215410401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303852599 + ... + 3303852602.

Almost surely, 2^13215410402 is an apocalyptic number.

13215410402 is a deficient number, since it is larger than the sum of its proper divisors (6607705204).

13215410402 is an equidigital number, since it uses as much as digits as its factorization.

13215410402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6607705203.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 13215410402 its reverse (20401451231), we get a palindrome (33616861633).

The spelling of 13215410402 in words is "thirteen billion, two hundred fifteen million, four hundred ten thousand, four hundred two".