72436766911 has 4 divisors (see below), whose sum is σ = 72497081824. Its totient is φ = 72376452000.

The previous prime is 72436766893. The next prime is 72436766957. The reversal of 72436766911 is 11966763427.

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 72436766911 - 2¹⁹ = 72436242623 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 (72436760911) 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, 30155655 + ... + 30158056.

It is an arithmetic number, because the mean of its divisors is an integer number (18124270456).

Almost surely, 2^72436766911 is an apocalyptic number.

72436766911 is a deficient number, since it is larger than the sum of its proper divisors (60314913).

72436766911 is a wasteful number, since it uses less digits than its factorization.

72436766911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60314912.

The product of its digits is 2286144, while the sum is 52.

The spelling of 72436766911 in words is "seventy-two billion, four hundred thirty-six million, seven hundred sixty-six thousand, nine hundred eleven".