72605387206089 has 6 divisors (see below), whose sum is σ = 104874448186586. Its totient is φ = 48403591470720.

The previous prime is 72605387205983. The next prime is 72605387206091. The reversal of 72605387206089 is 98060278350627.

72605387206089 is a `hidden beast` number, since 7 + 26 + 0 + 538 + 72 + 0 + 6 + 0 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38358699033600 + 34246688172489 = 6193440^2 + 5852067^2 .

It is not a de Polignac number, because 72605387206089 - 2¹¹ = 72605387204041 is a prime.

It is a super-2 number, since 2×72605387206089² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72605387205089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4033632622552 + ... + 4033632622569.

Almost surely, 2^{72605387206089} is an apocalyptic number.

It is an amenable number.

72605387206089 is a deficient number, since it is larger than the sum of its proper divisors (32269060980497).

72605387206089 is a wasteful number, since it uses less digits than its factorization.

72605387206089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067265245127 (or 8067265245124 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 72605387206089 in words is "seventy-two trillion, six hundred five billion, three hundred eighty-seven million, two hundred six thousand, eighty-nine".