77055276261 has 32 divisors (see below), whose sum is σ = 107012482560. Its totient is φ = 49279486464.

The previous prime is 77055276257. The next prime is 77055276271. The reversal of 77055276261 is 16267255077.

It is not a de Polignac number, because 77055276261 - 2² = 77055276257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77055276261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77055276211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8432451 + ... + 8441583.

It is an arithmetic number, because the mean of its divisors is an integer number (3344140080).

Almost surely, 2^77055276261 is an apocalyptic number.

It is an amenable number.

77055276261 is a deficient number, since it is larger than the sum of its proper divisors (29957206299).

77055276261 is a wasteful number, since it uses less digits than its factorization.

77055276261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10365.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 77055276261 in words is "seventy-seven billion, fifty-five million, two hundred seventy-six thousand, two hundred sixty-one".