13423402155534 has 192 divisors, whose sum is σ = 34173349422912. Its totient is φ = 3490443264000.

The previous prime is 13423402155533. The next prime is 13423402155563. The reversal of 13423402155534 is 43555120432431.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423402155533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22865884 + ... + 23445584.

It is an arithmetic number, because the mean of its divisors is an integer number (177986194911).

Almost surely, 2^{13423402155534} is an apocalyptic number.

13423402155534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13423402155534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17086674711456).

13423402155534 is an abundant number, since it is smaller than the sum of its proper divisors (20749947267378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13423402155534 is a wasteful number, since it uses less digits than its factorization.

13423402155534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579891 (or 579884 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 13423402155534 its reverse (43555120432431), we get a palindrome (56978522587965).

The spelling of 13423402155534 in words is "thirteen trillion, four hundred twenty-three billion, four hundred two million, one hundred fifty-five thousand, five hundred thirty-four".