72022051611509 has 8 divisors (see below), whose sum is σ = 73008846431640. Its totient is φ = 71035261963776.

The previous prime is 72022051611439. The next prime is 72022051611511. The reversal of 72022051611509 is 90511615022027.

It can be written as a sum of positive squares in 4 ways, for example, as 16196423172484 + 55825628439025 = 4024478^2 + 7471655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72022051611509 - 2¹⁶ = 72022051545973 is a prime.

It is a super-2 number, since 2×72022051611509² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72022051611589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32896859 + ... + 35017815.

It is an arithmetic number, because the mean of its divisors is an integer number (9126105803955).

Almost surely, 2^{72022051611509} is an apocalyptic number.

It is an amenable number.

72022051611509 is a deficient number, since it is larger than the sum of its proper divisors (986794820131).

72022051611509 is a wasteful number, since it uses less digits than its factorization.

72022051611509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586199.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 72022051611509 in words is "seventy-two trillion, twenty-two billion, fifty-one million, six hundred eleven thousand, five hundred nine".