123355153543 has 4 divisors (see below), whose sum is σ = 126223878088. Its totient is φ = 120486429000.

The previous prime is 123355153541. The next prime is 123355153567. The reversal of 123355153543 is 345351553321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345351553321 = 23 ⋅15015284927.

It is a cyclic number.

It is not a de Polignac number, because 123355153543 - 2¹ = 123355153541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123355153496 and 123355153505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123355153541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434362208 + ... + 1434362293.

It is an arithmetic number, because the mean of its divisors is an integer number (31555969522).

Almost surely, 2^123355153543 is an apocalyptic number.

123355153543 is a deficient number, since it is larger than the sum of its proper divisors (2868724545).

123355153543 is an equidigital number, since it uses as much as digits as its factorization.

123355153543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868724544.

The product of its digits is 405000, while the sum is 40.

The spelling of 123355153543 in words is "one hundred twenty-three billion, three hundred fifty-five million, one hundred fifty-three thousand, five hundred forty-three".