28913936501 has 2 divisors, whose sum is σ = 28913936502. Its totient is φ = 28913936500.

The previous prime is 28913936453. The next prime is 28913936507. The reversal of 28913936501 is 10563931982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21075490276 + 7838446225 = 145174^2 + 88535^2 .

It is a cyclic number.

It is not a de Polignac number, because 28913936501 - 2¹⁴ = 28913920117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28913936507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14456968250 + 14456968251.

It is an arithmetic number, because the mean of its divisors is an integer number (14456968251).

Almost surely, 2^28913936501 is an apocalyptic number.

It is an amenable number.

28913936501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28913936501 is an equidigital number, since it uses as much as digits as its factorization.

28913936501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 28913936501 in words is "twenty-eight billion, nine hundred thirteen million, nine hundred thirty-six thousand, five hundred one".