13100139646 has 32 divisors (see below), whose sum is σ = 22737179520. Its totient is φ = 5598122400.

The previous prime is 13100139643. The next prime is 13100139659. The reversal of 13100139646 is 64693100131.

It is a happy number.

It is a super-2 number, since 2×13100139646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13100139643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64861 + ... + 174376.

It is an arithmetic number, because the mean of its divisors is an integer number (710536860).

Almost surely, 2^13100139646 is an apocalyptic number.

13100139646 is a deficient number, since it is larger than the sum of its proper divisors (9637039874).

13100139646 is a wasteful number, since it uses less digits than its factorization.

13100139646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239400.

The product of its (nonzero) digits is 11664, while the sum is 34.

Adding to 13100139646 its reverse (64693100131), we get a palindrome (77793239777).

The spelling of 13100139646 in words is "thirteen billion, one hundred million, one hundred thirty-nine thousand, six hundred forty-six".