61353944963 has 2 divisors, whose sum is σ = 61353944964. Its totient is φ = 61353944962.

The previous prime is 61353944933. The next prime is 61353945017. The reversal of 61353944963 is 36944935316.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61353944963 is a prime.

It is not a weakly prime, because it can be changed into another prime (61353944923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30676972481 + 30676972482.

It is an arithmetic number, because the mean of its divisors is an integer number (30676972482).

Almost surely, 2^61353944963 is an apocalyptic number.

61353944963 is a deficient number, since it is larger than the sum of its proper divisors (1).

61353944963 is an equidigital number, since it uses as much as digits as its factorization.

61353944963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 53.

The spelling of 61353944963 in words is "sixty-one billion, three hundred fifty-three million, nine hundred forty-four thousand, nine hundred sixty-three".