13405216012 has 48 divisors (see below), whose sum is σ = 24794864640. Its totient is φ = 6331689728.

The previous prime is 13405215973. The next prime is 13405216021. The reversal of 13405216012 is 21061250431.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2351838 + ... + 2357530.

It is an arithmetic number, because the mean of its divisors is an integer number (516559680).

Almost surely, 2^13405216012 is an apocalyptic number.

It is an amenable number.

13405216012 is a deficient number, since it is larger than the sum of its proper divisors (11389648628).

13405216012 is a wasteful number, since it uses less digits than its factorization.

13405216012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162 (or 6160 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 13405216012 its reverse (21061250431), we get a palindrome (34466466443).

The spelling of 13405216012 in words is "thirteen billion, four hundred five million, two hundred sixteen thousand, twelve".