20751499201 has 2 divisors, whose sum is σ = 20751499202. Its totient is φ = 20751499200.

The previous prime is 20751499187. The next prime is 20751499217. The reversal of 20751499201 is 10299415702.

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., 10796249025 + 9955250176 = 103905^2 + 99776^2 .

It is a cyclic number.

It is not a de Polignac number, because 20751499201 - 2¹⁹ = 20750974913 is a prime.

It is not a weakly prime, because it can be changed into another prime (20751499261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10375749600 + 10375749601.

It is an arithmetic number, because the mean of its divisors is an integer number (10375749601).

Almost surely, 2^20751499201 is an apocalyptic number.

It is an amenable number.

20751499201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20751499201 is an equidigital number, since it uses as much as digits as its factorization.

20751499201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 20751499201 in words is "twenty billion, seven hundred fifty-one million, four hundred ninety-nine thousand, two hundred one".