381305748011 has 4 divisors (see below), whose sum is σ = 403735497912. Its totient is φ = 358875998112.

The previous prime is 381305747993. The next prime is 381305748013. The reversal of 381305748011 is 110847503183.

It is a happy number.

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 381305748011 - 2¹⁸ = 381305485867 is a prime.

It is a super-2 number, since 2×381305748011² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 381305748011.

It is not an unprimeable number, because it can be changed into a prime (381305748013) 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, 11214874925 + ... + 11214874958.

It is an arithmetic number, because the mean of its divisors is an integer number (100933874478).

Almost surely, 2^381305748011 is an apocalyptic number.

381305748011 is a deficient number, since it is larger than the sum of its proper divisors (22429749901).

381305748011 is a wasteful number, since it uses less digits than its factorization.

381305748011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22429749900.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 381305748011 in words is "three hundred eighty-one billion, three hundred five million, seven hundred forty-eight thousand, eleven".