61361000203 has 2 divisors, whose sum is σ = 61361000204. Its totient is φ = 61361000202.

The previous prime is 61361000191. The next prime is 61361000291. The reversal of 61361000203 is 30200016316.

61361000203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61361000203 is a prime.

It is not a weakly prime, because it can be changed into another prime (61361000303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30680500101 + 30680500102.

It is an arithmetic number, because the mean of its divisors is an integer number (30680500102).

Almost surely, 2^61361000203 is an apocalyptic number.

61361000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

61361000203 is an equidigital number, since it uses as much as digits as its factorization.

61361000203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 61361000203 its reverse (30200016316), we get a palindrome (91561016519).

The spelling of 61361000203 in words is "sixty-one billion, three hundred sixty-one million, two hundred three", and thus it is an aban number.