10203012012649 has 2 divisors, whose sum is σ = 10203012012650. Its totient is φ = 10203012012648.

The previous prime is 10203012012581. The next prime is 10203012012703. The reversal of 10203012012649 is 94621021030201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6446683497024 + 3756328515625 = 2539032^2 + 1938125^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203012012649 - 2¹³ = 10203012004457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10203012012649.

It is not a weakly prime, because it can be changed into another prime (10203012012049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101506006324 + 5101506006325.

It is an arithmetic number, because the mean of its divisors is an integer number (5101506006325).

Almost surely, 2^{10203012012649} is an apocalyptic number.

It is an amenable number.

10203012012649 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203012012649 is an equidigital number, since it uses as much as digits as its factorization.

10203012012649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 10203012012649 in words is "ten trillion, two hundred three billion, twelve million, twelve thousand, six hundred forty-nine".