72836667511 has 4 divisors (see below), whose sum is σ = 72837406224. Its totient is φ = 72835928800.

The previous prime is 72836667499. The next prime is 72836667539. The reversal of 72836667511 is 11576663827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11576663827 = 197 ⋅58764791.

It is a cyclic number.

It is not a de Polignac number, because 72836667511 - 2⁹ = 72836666999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72836662511) 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, 193570 + ... + 427951.

It is an arithmetic number, because the mean of its divisors is an integer number (18209351556).

Almost surely, 2^72836667511 is an apocalyptic number.

72836667511 is a deficient number, since it is larger than the sum of its proper divisors (738713).

72836667511 is a wasteful number, since it uses less digits than its factorization.

72836667511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738712.

The product of its digits is 2540160, while the sum is 52.

The spelling of 72836667511 in words is "seventy-two billion, eight hundred thirty-six million, six hundred sixty-seven thousand, five hundred eleven".