651554539241 has 2 divisors, whose sum is σ = 651554539242. Its totient is φ = 651554539240.

The previous prime is 651554539219. The next prime is 651554539309. The reversal of 651554539241 is 142935455156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416310138841 + 235244400400 = 645221^2 + 485020^2 .

It is a cyclic number.

It is not a de Polignac number, because 651554539241 - 2³⁴ = 634374670057 is a prime.

It is a super-3 number, since 3×651554539241³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 651554539241.

It is not a weakly prime, because it can be changed into another prime (651554539541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325777269620 + 325777269621.

It is an arithmetic number, because the mean of its divisors is an integer number (325777269621).

Almost surely, 2^651554539241 is an apocalyptic number.

It is an amenable number.

651554539241 is a deficient number, since it is larger than the sum of its proper divisors (1).

651554539241 is an equidigital number, since it uses as much as digits as its factorization.

651554539241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240000, while the sum is 50.

The spelling of 651554539241 in words is "six hundred fifty-one billion, five hundred fifty-four million, five hundred thirty-nine thousand, two hundred forty-one".