726889282561 has 16 divisors (see below), whose sum is σ = 798415878400. Its totient is φ = 657715189248.

The previous prime is 726889282543. The next prime is 726889282577. The reversal of 726889282561 is 165282988627.

726889282561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 726889282561 - 2¹³ = 726889274369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726889282493 and 726889282502.

It is not an unprimeable number, because it can be changed into a prime (726889282061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2403216 + ... + 2688721.

It is an arithmetic number, because the mean of its divisors is an integer number (49900992400).

Almost surely, 2^726889282561 is an apocalyptic number.

It is an amenable number.

726889282561 is a deficient number, since it is larger than the sum of its proper divisors (71526595839).

726889282561 is a wasteful number, since it uses less digits than its factorization.

726889282561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092168.

The product of its digits is 46448640, while the sum is 64.

The spelling of 726889282561 in words is "seven hundred twenty-six billion, eight hundred eighty-nine million, two hundred eighty-two thousand, five hundred sixty-one".