75681743911 has 4 divisors (see below), whose sum is σ = 75686523552. Its totient is φ = 75676964272.

The previous prime is 75681743909. The next prime is 75681743941. The reversal of 75681743911 is 11934718657.

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 75681743911 - 2¹ = 75681743909 is a prime.

It is a super-2 number, since 2×75681743911² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75681743941) 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, 2365990 + ... + 2397763.

It is an arithmetic number, because the mean of its divisors is an integer number (18921630888).

Almost surely, 2^75681743911 is an apocalyptic number.

75681743911 is a deficient number, since it is larger than the sum of its proper divisors (4779641).

75681743911 is a wasteful number, since it uses less digits than its factorization.

75681743911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779640.

The product of its digits is 1270080, while the sum is 52.

The spelling of 75681743911 in words is "seventy-five billion, six hundred eighty-one million, seven hundred forty-three thousand, nine hundred eleven".