134404431253502 has 4 divisors (see below), whose sum is σ = 201606646880256. Its totient is φ = 67202215626750.

The previous prime is 134404431253501. The next prime is 134404431253513. The reversal of 134404431253502 is 205352134404431.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×134404431253502² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134404431253502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134404431253501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33601107813374 + ... + 33601107813377.

It is an arithmetic number, because the mean of its divisors is an integer number (50401661720064).

Almost surely, 2^{134404431253502} is an apocalyptic number.

134404431253502 is a deficient number, since it is larger than the sum of its proper divisors (67202215626754).

134404431253502 is an equidigital number, since it uses as much as digits as its factorization.

134404431253502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67202215626753.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 134404431253502 its reverse (205352134404431), we get a palindrome (339756565657933).

The spelling of 134404431253502 in words is "one hundred thirty-four trillion, four hundred four billion, four hundred thirty-one million, two hundred fifty-three thousand, five hundred two".