961040648555 has 16 divisors (see below), whose sum is σ = 1242003260064. Its totient is φ = 709666963200.

The previous prime is 961040648551. The next prime is 961040648597. The reversal of 961040648555 is 555846040169.

It is not a de Polignac number, because 961040648555 - 2² = 961040648551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 961040648497 and 961040648506.

It is not an unprimeable number, because it can be changed into a prime (961040648551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754480 + ... + 2236130.

It is an arithmetic number, because the mean of its divisors is an integer number (77625203754).

Almost surely, 2^961040648555 is an apocalyptic number.

961040648555 is a deficient number, since it is larger than the sum of its proper divisors (280962611509).

961040648555 is a wasteful number, since it uses less digits than its factorization.

961040648555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512366.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 961040648555 in words is "nine hundred sixty-one billion, forty million, six hundred forty-eight thousand, five hundred fifty-five".