651104542117 has 2 divisors, whose sum is σ = 651104542118. Its totient is φ = 651104542116.

The previous prime is 651104542091. The next prime is 651104542201. The reversal of 651104542117 is 711245401156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445327994241 + 205776547876 = 667329^2 + 453626^2 .

It is a cyclic number.

It is not a de Polignac number, because 651104542117 - 2²³ = 651096153509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651104540117) 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, 325552271058 + 325552271059.

It is an arithmetic number, because the mean of its divisors is an integer number (325552271059).

Almost surely, 2^651104542117 is an apocalyptic number.

It is an amenable number.

651104542117 is a deficient number, since it is larger than the sum of its proper divisors (1).

651104542117 is an equidigital number, since it uses as much as digits as its factorization.

651104542117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 651104542117 in words is "six hundred fifty-one billion, one hundred four million, five hundred forty-two thousand, one hundred seventeen".