28375620101 has 2 divisors, whose sum is σ = 28375620102. Its totient is φ = 28375620100.

The previous prime is 28375620089. The next prime is 28375620121. The reversal of 28375620101 is 10102657382.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23799232900 + 4576387201 = 154270^2 + 67649^2 .

It is a cyclic number.

It is not a de Polignac number, because 28375620101 - 2¹⁴ = 28375603717 is a prime.

It is a super-2 number, since 2×28375620101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28375620121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187810050 + 14187810051.

It is an arithmetic number, because the mean of its divisors is an integer number (14187810051).

Almost surely, 2^28375620101 is an apocalyptic number.

It is an amenable number.

28375620101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28375620101 is an equidigital number, since it uses as much as digits as its factorization.

28375620101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 28375620101 in words is "twenty-eight billion, three hundred seventy-five million, six hundred twenty thousand, one hundred one".