10120115513 has 4 divisors (see below), whose sum is σ = 10286019108. Its totient is φ = 9954211920.

The previous prime is 10120115503. The next prime is 10120115531. The reversal of 10120115513 is 31551102101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31551102101 = 271 ⋅116424731.

It can be written as a sum of positive squares in 2 ways, for example, as 1431638569 + 8688476944 = 37837^2 + 93212^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120115513 - 2⁴ = 10120115497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10120115503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82951706 + ... + 82951827.

It is an arithmetic number, because the mean of its divisors is an integer number (2571504777).

Almost surely, 2^10120115513 is an apocalyptic number.

It is an amenable number.

10120115513 is a deficient number, since it is larger than the sum of its proper divisors (165903595).

10120115513 is an equidigital number, since it uses as much as digits as its factorization.

10120115513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165903594.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 10120115513 its reverse (31551102101), we get a palindrome (41671217614).

The spelling of 10120115513 in words is "ten billion, one hundred twenty million, one hundred fifteen thousand, five hundred thirteen".