13011315146 has 4 divisors (see below), whose sum is σ = 19516972722. Its totient is φ = 6505657572.

The previous prime is 13011315101. The next prime is 13011315181. The reversal of 13011315146 is 64151311031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64151311031 = 421 ⋅152378411.

It can be written as a sum of positive squares in only one way, i.e., 11886450625 + 1124864521 = 109025^2 + 33539^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252828785 + ... + 3252828788.

Almost surely, 2^13011315146 is an apocalyptic number.

13011315146 is a deficient number, since it is larger than the sum of its proper divisors (6505657576).

13011315146 is an equidigital number, since it uses as much as digits as its factorization.

13011315146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505657575.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 13011315146 its reverse (64151311031), we get a palindrome (77162626177).

The spelling of 13011315146 in words is "thirteen billion, eleven million, three hundred fifteen thousand, one hundred forty-six".