2115440767 has 4 divisors (see below), whose sum is σ = 2307753576. Its totient is φ = 1923127960.

The previous prime is 2115440741. The next prime is 2115440783. The reversal of 2115440767 is 7670445112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2115440767 - 2¹¹ = 2115438719 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 (2115440267) 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, 96156388 + ... + 96156409.

It is an arithmetic number, because the mean of its divisors is an integer number (576938394).

Almost surely, 2^2115440767 is an apocalyptic number.

2115440767 is a deficient number, since it is larger than the sum of its proper divisors (192312809).

2115440767 is a wasteful number, since it uses less digits than its factorization.

2115440767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192312808.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 2115440767 is about 45993.9209787554. The cubic root of 2115440767 is about 1283.7100950276.

Adding to 2115440767 its reverse (7670445112), we get a palindrome (9785885879).

The spelling of 2115440767 in words is "two billion, one hundred fifteen million, four hundred forty thousand, seven hundred sixty-seven".