28698610726569 has 16 divisors (see below), whose sum is σ = 44045829416960. Its totient is φ = 16281226227600.

The previous prime is 28698610726553. The next prime is 28698610726613. The reversal of 28698610726569 is 96562701689682.

It is not a de Polignac number, because 28698610726569 - 2⁴ = 28698610726553 is a prime.

It is a super-2 number, since 2×28698610726569² (a number of 28 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 28698610726569.

It is not an unprimeable number, because it can be changed into a prime (28698610726069) 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, 4915826257 + ... + 4915832094.

It is an arithmetic number, because the mean of its divisors is an integer number (2752864338560).

Almost surely, 2^{28698610726569} is an apocalyptic number.

It is an amenable number.

28698610726569 is a deficient number, since it is larger than the sum of its proper divisors (15347218690391).

28698610726569 is a wasteful number, since it uses less digits than its factorization.

28698610726569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9831658500.

The product of its (nonzero) digits is 940584960, while the sum is 75.

The spelling of 28698610726569 in words is "twenty-eight trillion, six hundred ninety-eight billion, six hundred ten million, seven hundred twenty-six thousand, five hundred sixty-nine".