123155441045 has 32 divisors (see below), whose sum is σ = 186327509760. Its totient is φ = 76052021760.

The previous prime is 123155441033. The next prime is 123155441081. The reversal of 123155441045 is 540144551321.

It is a happy number.

It is not a de Polignac number, because 123155441045 - 2¹⁶ = 123155375509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 123155440996 and 123155441014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3282215 + ... + 3319524.

It is an arithmetic number, because the mean of its divisors is an integer number (5822734680).

Almost surely, 2^123155441045 is an apocalyptic number.

It is an amenable number.

123155441045 is a deficient number, since it is larger than the sum of its proper divisors (63172068715).

123155441045 is a wasteful number, since it uses less digits than its factorization.

123155441045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601805.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 123155441045 its reverse (540144551321), we get a palindrome (663299992366).

The spelling of 123155441045 in words is "one hundred twenty-three billion, one hundred fifty-five million, four hundred forty-one thousand, forty-five".