13120012750 has 32 divisors (see below), whose sum is σ = 26449952256. Its totient is φ = 4844311200.

The previous prime is 13120012663. The next prime is 13120012847. The reversal of 13120012750 is 5721002131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2015214 + ... + 2021713.

It is an arithmetic number, because the mean of its divisors is an integer number (826561008).

Almost surely, 2^13120012750 is an apocalyptic number.

13120012750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13120012750 is an abundant number, since it is smaller than the sum of its proper divisors (13329939506).

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

13120012750 is a wasteful number, since it uses less digits than its factorization.

13120012750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036957 (or 4036947 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

Adding to 13120012750 its reverse (5721002131), we get a palindrome (18841014881).

The spelling of 13120012750 in words is "thirteen billion, one hundred twenty million, twelve thousand, seven hundred fifty".