5123115142540 has 72 divisors (see below), whose sum is σ = 11238440662512. Its totient is φ = 1961174142720.

The previous prime is 5123115142487. The next prime is 5123115142543. The reversal of 5123115142540 is 452415113215.

It is a junction number, because it is equal to n+sod(n) for n = 5123115142496 and 5123115142505.

It is not an unprimeable number, because it can be changed into a prime (5123115142543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136479 + ... + 3203881.

It is an arithmetic number, because the mean of its divisors is an integer number (156089453646).

Almost surely, 2^{5123115142540} 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 5123115142540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5619220331256).

5123115142540 is an abundant number, since it is smaller than the sum of its proper divisors (6115325519972).

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

5123115142540 is a wasteful number, since it uses less digits than its factorization.

5123115142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067547 (or 3067508 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 5123115142540 in words is "five trillion, one hundred twenty-three billion, one hundred fifteen million, one hundred forty-two thousand, five hundred forty".