200120004649 has 2 divisors, whose sum is σ = 200120004650. Its totient is φ = 200120004648.

The previous prime is 200120004631. The next prime is 200120004661. The reversal of 200120004649 is 946400021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142102611225 + 58017393424 = 376965^2 + 240868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200120004649 is a prime.

It is a super-2 number, since 2×200120004649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200120001649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060002324 + 100060002325.

It is an arithmetic number, because the mean of its divisors is an integer number (100060002325).

Almost surely, 2^200120004649 is an apocalyptic number.

It is an amenable number.

200120004649 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120004649 is an equidigital number, since it uses as much as digits as its factorization.

200120004649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 200120004649 in words is "two hundred billion, one hundred twenty million, four thousand, six hundred forty-nine".