2115412445 has 16 divisors (see below), whose sum is σ = 2553016752. Its totient is φ = 1682672640.

The previous prime is 2115412427. The next prime is 2115412447. The reversal of 2115412445 is 5442145112.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 231678841 + 1883733604 = 15221^2 + 43402^2 .

It is not a de Polignac number, because 2115412445 - 2⁶ = 2115412381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115412447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219799 + ... + 1221531.

It is an arithmetic number, because the mean of its divisors is an integer number (159563547).

Almost surely, 2^2115412445 is an apocalyptic number.

It is an amenable number.

2115412445 is a deficient number, since it is larger than the sum of its proper divisors (437604307).

2115412445 is a wasteful number, since it uses less digits than its factorization.

2115412445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992.

The product of its digits is 6400, while the sum is 29.

The square root of 2115412445 is about 45993.6130892105. The cubic root of 2115412445 is about 1283.7043661349.

Adding to 2115412445 its reverse (5442145112), we get a palindrome (7557557557).

The spelling of 2115412445 in words is "two billion, one hundred fifteen million, four hundred twelve thousand, four hundred forty-five".