2115520511 has 16 divisors (see below), whose sum is σ = 2448288864. Its totient is φ = 1810473984.

The previous prime is 2115520489. The next prime is 2115520531. The reversal of 2115520511 is 1150255112.

It is a cyclic number.

It is not a de Polignac number, because 2115520511 - 2²⁶ = 2048411647 is a prime.

It is a super-2 number, since 2×2115520511² = 8950854064923402242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115520531) 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, 56630 + ... + 86243.

It is an arithmetic number, because the mean of its divisors is an integer number (153018054).

Almost surely, 2^2115520511 is an apocalyptic number.

2115520511 is a deficient number, since it is larger than the sum of its proper divisors (332768353).

2115520511 is a wasteful number, since it uses less digits than its factorization.

2115520511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142970.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 2115520511 is about 45994.7878677574. The cubic root of 2115520511 is about 1283.7262251399.

Adding to 2115520511 its reverse (1150255112), we get a palindrome (3265775623).

The spelling of 2115520511 in words is "two billion, one hundred fifteen million, five hundred twenty thousand, five hundred eleven".