4767945215881 has 4 divisors (see below), whose sum is σ = 4896808600132. Its totient is φ = 4639081831632.

The previous prime is 4767945215857. The next prime is 4767945215909. The reversal of 4767945215881 is 1885125497674.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3893159125881 + 874786090000 = 1973109^2 + 935300^2 .

It is a cyclic number.

It is not a de Polignac number, because 4767945215881 - 2⁵ = 4767945215849 is a prime.

It is a super-2 number, since 2×4767945215881² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4767945215381) 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, 64431692070 + ... + 64431692143.

It is an arithmetic number, because the mean of its divisors is an integer number (1224202150033).

Almost surely, 2^{4767945215881} is an apocalyptic number.

It is an amenable number.

4767945215881 is a deficient number, since it is larger than the sum of its proper divisors (128863384251).

4767945215881 is a wasteful number, since it uses less digits than its factorization.

4767945215881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128863384250.

The product of its digits is 135475200, while the sum is 67.

The spelling of 4767945215881 in words is "four trillion, seven hundred sixty-seven billion, nine hundred forty-five million, two hundred fifteen thousand, eight hundred eighty-one".