72782660069 has 8 divisors (see below), whose sum is σ = 83415823680. Its totient is φ = 62208406656.

The previous prime is 72782660059. The next prime is 72782660089. The reversal of 72782660069 is 96006628727.

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 72782660069 - 2²⁴ = 72765882853 is a prime.

It is a super-2 number, since 2×72782660069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72782660069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72782660029) 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, 14724899 + ... + 14729840.

It is an arithmetic number, because the mean of its divisors is an integer number (10426977960).

Almost surely, 2^72782660069 is an apocalyptic number.

It is an amenable number.

72782660069 is a deficient number, since it is larger than the sum of its proper divisors (10633163611).

72782660069 is a wasteful number, since it uses less digits than its factorization.

72782660069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29455099.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 72782660069 in words is "seventy-two billion, seven hundred eighty-two million, six hundred sixty thousand, sixty-nine".