651740620057 has 2 divisors, whose sum is σ = 651740620058. Its totient is φ = 651740620056.

The previous prime is 651740620001. The next prime is 651740620067. The reversal of 651740620057 is 750026047156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538317157401 + 113423462656 = 733701^2 + 336784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651740620057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 651740619995 and 651740620022.

It is not a weakly prime, because it can be changed into another prime (651740620067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325870310028 + 325870310029.

It is an arithmetic number, because the mean of its divisors is an integer number (325870310029).

Almost surely, 2^651740620057 is an apocalyptic number.

It is an amenable number.

651740620057 is a deficient number, since it is larger than the sum of its proper divisors (1).

651740620057 is an equidigital number, since it uses as much as digits as its factorization.

651740620057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 651740620057 in words is "six hundred fifty-one billion, seven hundred forty million, six hundred twenty thousand, fifty-seven".