72549896911 has 16 divisors (see below), whose sum is σ = 73661127840. Its totient is φ = 71447299200.

The previous prime is 72549896891. The next prime is 72549896977. The reversal of 72549896911 is 11969894527.

It is a cyclic number.

It is not a de Polignac number, because 72549896911 - 2¹⁷ = 72549765839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72549896911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72549896611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19913056 + ... + 19916698.

It is an arithmetic number, because the mean of its divisors is an integer number (4603820490).

Almost surely, 2^72549896911 is an apocalyptic number.

72549896911 is a deficient number, since it is larger than the sum of its proper divisors (1111230929).

72549896911 is a wasteful number, since it uses less digits than its factorization.

72549896911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746.

The product of its digits is 9797760, while the sum is 61.

The spelling of 72549896911 in words is "seventy-two billion, five hundred forty-nine million, eight hundred ninety-six thousand, nine hundred eleven".