2951763439561 has 2 divisors, whose sum is σ = 2951763439562. Its totient is φ = 2951763439560.

The previous prime is 2951763439543. The next prime is 2951763439621. The reversal of 2951763439561 is 1659343671592.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2417343957961 + 534419481600 = 1554781^2 + 731040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2951763439561 - 2⁵ = 2951763439529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2951763439561.

It is not a weakly prime, because it can be changed into another prime (2951763439501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1475881719780 + 1475881719781.

It is an arithmetic number, because the mean of its divisors is an integer number (1475881719781).

Almost surely, 2^{2951763439561} is an apocalyptic number.

It is an amenable number.

2951763439561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2951763439561 is an equidigital number, since it uses as much as digits as its factorization.

2951763439561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36741600, while the sum is 61.

The spelling of 2951763439561 in words is "two trillion, nine hundred fifty-one billion, seven hundred sixty-three million, four hundred thirty-nine thousand, five hundred sixty-one".