5181333765 has 16 divisors (see below), whose sum is σ = 8291397696. Its totient is φ = 2762956800.

The previous prime is 5181333761. The next prime is 5181333767. The reversal of 5181333765 is 5673331815.

It is not a de Polignac number, because 5181333765 - 2² = 5181333761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181333761) 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, 92730 + ... + 137700.

It is an arithmetic number, because the mean of its divisors is an integer number (518212356).

Almost surely, 2^5181333765 is an apocalyptic number.

It is an amenable number.

5181333765 is a deficient number, since it is larger than the sum of its proper divisors (3110063931).

5181333765 is a wasteful number, since it uses less digits than its factorization.

5181333765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52660.

The product of its digits is 226800, while the sum is 42.

The square root of 5181333765 is about 71981.4820978285. The cubic root of 5181333765 is about 1730.4027223532.

The spelling of 5181333765 in words is "five billion, one hundred eighty-one million, three hundred thirty-three thousand, seven hundred sixty-five".