123155237248 has 64 divisors (see below), whose sum is σ = 258371712000. Its totient is φ = 58311774720.

The previous prime is 123155237203. The next prime is 123155237263. The reversal of 123155237248 is 842732551321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×123155237248² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 6486393 + ... + 6505351.

It is an arithmetic number, because the mean of its divisors is an integer number (4037058000).

Almost surely, 2^123155237248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123155237248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129185856000).

123155237248 is an abundant number, since it is smaller than the sum of its proper divisors (135216474752).

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

123155237248 is a wasteful number, since it uses less digits than its factorization.

123155237248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21663 (or 21651 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

Adding to 123155237248 its reverse (842732551321), we get a palindrome (965887788569).

The spelling of 123155237248 in words is "one hundred twenty-three billion, one hundred fifty-five million, two hundred thirty-seven thousand, two hundred forty-eight".