2002107447961 has 2 divisors, whose sum is σ = 2002107447962. Its totient is φ = 2002107447960.

The previous prime is 2002107447937. The next prime is 2002107448007. The reversal of 2002107447961 is 1697447012002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2000934727936 + 1172720025 = 1414544^2 + 34245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002107447961 - 2³¹ = 1999959964313 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002107448961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001053723980 + 1001053723981.

It is an arithmetic number, because the mean of its divisors is an integer number (1001053723981).

Almost surely, 2^{2002107447961} is an apocalyptic number.

It is an amenable number.

2002107447961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002107447961 is an equidigital number, since it uses as much as digits as its factorization.

2002107447961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 2002107447961 in words is "two trillion, two billion, one hundred seven million, four hundred forty-seven thousand, nine hundred sixty-one".