2145115015 has 16 divisors (see below), whose sum is σ = 2635130880. Its totient is φ = 1675603360.

The previous prime is 2145115009. The next prime is 2145115019. The reversal of 2145115015 is 5105115412.

It is a de Polignac number, because none of the positive numbers 2^k-2145115015 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145115019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90696 + ... + 111874.

It is an arithmetic number, because the mean of its divisors is an integer number (164695680).

Almost surely, 2^2145115015 is an apocalyptic number.

2145115015 is a deficient number, since it is larger than the sum of its proper divisors (490015865).

2145115015 is a wasteful number, since it uses less digits than its factorization.

2145115015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21662.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 2145115015 is about 46315.3863742925. The cubic root of 2145115015 is about 1289.6846403768.

The spelling of 2145115015 in words is "two billion, one hundred forty-five million, one hundred fifteen thousand, fifteen".