2765955961 has 4 divisors (see below), whose sum is σ = 2766183012. Its totient is φ = 2765728912.

The previous prime is 2765955953. The next prime is 2765955971. The reversal of 2765955961 is 1695595672.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1700325225 + 1065630736 = 41235^2 + 32644^2 .

It is a cyclic number.

It is not a de Polignac number, because 2765955961 - 2³ = 2765955953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2765955901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94150 + ... + 119983.

It is an arithmetic number, because the mean of its divisors is an integer number (691545753).

Almost surely, 2^2765955961 is an apocalyptic number.

It is an amenable number.

2765955961 is a deficient number, since it is larger than the sum of its proper divisors (227051).

2765955961 is a wasteful number, since it uses less digits than its factorization.

2765955961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227050.

The product of its digits is 5103000, while the sum is 55.

The square root of 2765955961 is about 52592.3564883720. The cubic root of 2765955961 is about 1403.7240918603.

The spelling of 2765955961 in words is "two billion, seven hundred sixty-five million, nine hundred fifty-five thousand, nine hundred sixty-one".