61603426307 has 2 divisors, whose sum is σ = 61603426308. Its totient is φ = 61603426306.

The previous prime is 61603426301. The next prime is 61603426319. The reversal of 61603426307 is 70362430616.

61603426307 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 not a de Polignac number, because 61603426307 - 2⁶ = 61603426243 is a prime.

It is not a weakly prime, because it can be changed into another prime (61603426301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30801713153 + 30801713154.

It is an arithmetic number, because the mean of its divisors is an integer number (30801713154).

Almost surely, 2^61603426307 is an apocalyptic number.

61603426307 is a deficient number, since it is larger than the sum of its proper divisors (1).

61603426307 is an equidigital number, since it uses as much as digits as its factorization.

61603426307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 61603426307 in words is "sixty-one billion, six hundred three million, four hundred twenty-six thousand, three hundred seven".