13144432502 has 4 divisors (see below), whose sum is σ = 19716648756. Its totient is φ = 6572216250.

The previous prime is 13144432493. The next prime is 13144432547. The reversal of 13144432502 is 20523444131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20523444131 = 9433 ⋅2175707.

It is a super-2 number, since 2×13144432502² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3286108124 + ... + 3286108127.

It is an arithmetic number, because the mean of its divisors is an integer number (4929162189).

Almost surely, 2^13144432502 is an apocalyptic number.

13144432502 is a deficient number, since it is larger than the sum of its proper divisors (6572216254).

13144432502 is an equidigital number, since it uses as much as digits as its factorization.

13144432502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572216253.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 13144432502 its reverse (20523444131), we get a palindrome (33667876633).

The spelling of 13144432502 in words is "thirteen billion, one hundred forty-four million, four hundred thirty-two thousand, five hundred two".