123505354005 has 48 divisors (see below), whose sum is σ = 222257555520. Its totient is φ = 58488756480.

The previous prime is 123505354003. The next prime is 123505354043. The reversal of 123505354005 is 500453505321.

It is a happy number.

It is not a de Polignac number, because 123505354005 - 2¹ = 123505354003 is a prime.

It is a super-3 number, since 3×123505354005³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123505354003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 713200 + ... + 869289.

It is an arithmetic number, because the mean of its divisors is an integer number (4630365740).

Almost surely, 2^123505354005 is an apocalyptic number.

123505354005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123505354005 is a deficient number, since it is larger than the sum of its proper divisors (98752201515).

123505354005 is a wasteful number, since it uses less digits than its factorization.

123505354005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582562 (or 1582551 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 123505354005 its reverse (500453505321), we get a palindrome (623958859326).

The spelling of 123505354005 in words is "one hundred twenty-three billion, five hundred five million, three hundred fifty-four thousand, five".