651104987543 has 2 divisors, whose sum is σ = 651104987544. Its totient is φ = 651104987542.

The previous prime is 651104987539. The next prime is 651104987557. The reversal of 651104987543 is 345789401156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651104987543 - 2² = 651104987539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651104987503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325552493771 + 325552493772.

It is an arithmetic number, because the mean of its divisors is an integer number (325552493772).

Almost surely, 2^651104987543 is an apocalyptic number.

651104987543 is a deficient number, since it is larger than the sum of its proper divisors (1).

651104987543 is an equidigital number, since it uses as much as digits as its factorization.

651104987543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 651104987543 in words is "six hundred fifty-one billion, one hundred four million, nine hundred eighty-seven thousand, five hundred forty-three".