961180528261 has 2 divisors, whose sum is σ = 961180528262. Its totient is φ = 961180528260.

The previous prime is 961180528247. The next prime is 961180528417. The reversal of 961180528261 is 162825081169.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 905696725761 + 55483802500 = 951681^2 + 235550^2 .

It is a cyclic number.

It is not a de Polignac number, because 961180528261 - 2²⁹ = 960643657349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961180528201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480590264130 + 480590264131.

It is an arithmetic number, because the mean of its divisors is an integer number (480590264131).

Almost surely, 2^961180528261 is an apocalyptic number.

It is an amenable number.

961180528261 is a deficient number, since it is larger than the sum of its proper divisors (1).

961180528261 is an equidigital number, since it uses as much as digits as its factorization.

961180528261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 961180528261 in words is "nine hundred sixty-one billion, one hundred eighty million, five hundred twenty-eight thousand, two hundred sixty-one".