2966551961 has 2 divisors, whose sum is σ = 2966551962. Its totient is φ = 2966551960.

The previous prime is 2966551933. The next prime is 2966551967. The reversal of 2966551961 is 1691556692.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1995855625 + 970696336 = 44675^2 + 31156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2966551961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2966551967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1483275980 + 1483275981.

It is an arithmetic number, because the mean of its divisors is an integer number (1483275981).

Almost surely, 2^2966551961 is an apocalyptic number.

It is an amenable number.

2966551961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2966551961 is an equidigital number, since it uses as much as digits as its factorization.

2966551961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 50.

The square root of 2966551961 is about 54466.0624701290. The cubic root of 2966551961 is about 1436.8694790029.

The spelling of 2966551961 in words is "two billion, nine hundred sixty-six million, five hundred fifty-one thousand, nine hundred sixty-one".