2129472767 has 4 divisors (see below), whose sum is σ = 2129572080. Its totient is φ = 2129373456.

The previous prime is 2129472721. The next prime is 2129472791. The reversal of 2129472767 is 7672749212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2129472767 - 2²⁴ = 2112695551 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129472067) 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 3 ways as a sum of consecutive naturals, for example, 2678 + ... + 65315.

It is an arithmetic number, because the mean of its divisors is an integer number (532393020).

Almost surely, 2^2129472767 is an apocalyptic number.

2129472767 is a deficient number, since it is larger than the sum of its proper divisors (99313).

2129472767 is an equidigital number, since it uses as much as digits as its factorization.

2129472767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99312.

The product of its digits is 592704, while the sum is 47.

The square root of 2129472767 is about 46146.2107545137. The cubic root of 2129472767 is about 1286.5421822959.

The spelling of 2129472767 in words is "two billion, one hundred twenty-nine million, four hundred seventy-two thousand, seven hundred sixty-seven".