123245012033544 has 32 divisors (see below), whose sum is σ = 309201266956320. Its totient is φ = 40936505761536.

The previous prime is 123245012033501. The next prime is 123245012033551. The reversal of 123245012033544 is 445330210542321.

It is a happy number.

It is a super-2 number, since 2×123245012033544² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9072800337 + ... + 9072813920.

It is an arithmetic number, because the mean of its divisors is an integer number (9662539592385).

Almost surely, 2^{123245012033544} is an apocalyptic number.

It is an amenable number.

123245012033544 is an abundant number, since it is smaller than the sum of its proper divisors (185956254922776).

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

123245012033544 is a wasteful number, since it uses less digits than its factorization.

123245012033544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18145614549 (or 18145614545 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 123245012033544 its reverse (445330210542321), we get a palindrome (568575222575865).

The spelling of 123245012033544 in words is "one hundred twenty-three trillion, two hundred forty-five billion, twelve million, thirty-three thousand, five hundred forty-four".