73783443645011 has 4 divisors (see below), whose sum is σ = 73994857524000. Its totient is φ = 73572029766024.

The previous prime is 73783443644987. The next prime is 73783443645029. The reversal of 73783443645011 is 11054634438737.

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 73783443645011 - 2³⁸ = 73508565738067 is a prime.

It is a super-2 number, since 2×73783443645011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73783443645031) 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, 105706938971 + ... + 105706939668.

It is an arithmetic number, because the mean of its divisors is an integer number (18498714381000).

Almost surely, 2^{73783443645011} is an apocalyptic number.

73783443645011 is a deficient number, since it is larger than the sum of its proper divisors (211413878989).

73783443645011 is a wasteful number, since it uses less digits than its factorization.

73783443645011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211413878988.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 73783443645011 in words is "seventy-three trillion, seven hundred eighty-three billion, four hundred forty-three million, six hundred forty-five thousand, eleven".