28789820602101 has 12 divisors (see below), whose sum is σ = 44784165381228. Its totient is φ = 17716812678144.

The previous prime is 28789820602087. The next prime is 28789820602117. The reversal of 28789820602101 is 10120602898782.

28789820602101 is a `hidden beast` number, since 2 + 8 + 7 + 8 + 9 + 8 + 20 + 602 + 1 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4109839871076 + 24679980731025 = 2027274^2 + 4967895^2 .

It is not a de Polignac number, because 28789820602101 - 2¹³ = 28789820593909 is a prime.

It is a super-2 number, since 2×28789820602101² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28789820603101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123033421260 + ... + 123033421493.

It is an arithmetic number, because the mean of its divisors is an integer number (3732013781769).

Almost surely, 2^{28789820602101} is an apocalyptic number.

It is an amenable number.

28789820602101 is a deficient number, since it is larger than the sum of its proper divisors (15994344779127).

28789820602101 is a wasteful number, since it uses less digits than its factorization.

28789820602101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246066842772 (or 246066842769 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 28789820602101 in words is "twenty-eight trillion, seven hundred eighty-nine billion, eight hundred twenty million, six hundred two thousand, one hundred one".