72868126998529 has 2 divisors, whose sum is σ = 72868126998530. Its totient is φ = 72868126998528.

The previous prime is 72868126998517. The next prime is 72868126998553. The reversal of 72868126998529 is 92589962186827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51264669204225 + 21603457794304 = 7159935^2 + 4647952^2 .

It is a cyclic number.

It is not a de Polignac number, because 72868126998529 - 2²³ = 72868118609921 is a prime.

It is not a weakly prime, because it can be changed into another prime (72868126998229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36434063499264 + 36434063499265.

It is an arithmetic number, because the mean of its divisors is an integer number (36434063499265).

Almost surely, 2^{72868126998529} is an apocalyptic number.

It is an amenable number.

72868126998529 is a deficient number, since it is larger than the sum of its proper divisors (1).

72868126998529 is an equidigital number, since it uses as much as digits as its factorization.

72868126998529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3762339840, while the sum is 82.

The spelling of 72868126998529 in words is "seventy-two trillion, eight hundred sixty-eight billion, one hundred twenty-six million, nine hundred ninety-eight thousand, five hundred twenty-nine".