13429769640172 has 24 divisors (see below), whose sum is σ = 23722145773200. Its totient is φ = 6652015838400.

The previous prime is 13429769640143. The next prime is 13429769640173. The reversal of 13429769640172 is 27104696792431.

It is a happy number.

13429769640172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13429769640172.

It is not an unprimeable number, because it can be changed into a prime (13429769640173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28592422 + ... + 29058322.

It is an arithmetic number, because the mean of its divisors is an integer number (988422740550).

Almost surely, 2^{13429769640172} is an apocalyptic number.

It is an amenable number.

13429769640172 is a deficient number, since it is larger than the sum of its proper divisors (10292376133028).

13429769640172 is a wasteful number, since it uses less digits than its factorization.

13429769640172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533361 (or 533359 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 61.

The spelling of 13429769640172 in words is "thirteen trillion, four hundred twenty-nine billion, seven hundred sixty-nine million, six hundred forty thousand, one hundred seventy-two".